Lelouch Lamperouge of Code Geass does this a lot throughout the series, heck it's his first use of Geass in both seasons. Typically only on mooks, because main characters are simply more useful under mind control.
A cruel inversion happens when Lelouch geasses Suzaku and orders him to "live" in the middle of battle, attempting to save himself from what would've been a suicidal attack. This, because what Suzaku wants the most is todie.
Another inversion happens with Shirley, who Lelouch begs to live after she was shot. It fails.
Some side-materials say that Mao did this to a whole village in China, exposing their darkest secrets and then driving them to kill each other over them.
In Death Note, "suicide" is considered an acceptable cause of death with the titular book. Light uses it to get rid of Naomi Misora (in such a way as for her body not to be discovered) and Kiyomi Takada (self-immolation).
In Eternal Sabbath, the immature ultra-powered boy antagonist, Izaku, used this on people that annoyed him.
Legato Bluesummers in Trigun is fond of this, as well. In the manga it's less psychic and more body control through electrical impulses from tiny wires.
In StrikerS Sound Stage X of the Magical Girl Lyrical Nanoha franchise, all the murder victims were killed by being psychically forced to stab their own throats. Even worse, the victims were fully aware of it happening and could do nothing but scream for help.
In Darker Than Black a possessor-type Contractor killed people by taking over one's body, then standing on the edge of a roof or something and snapping back to his old body, leaving the dazed victim to fall.
And in the interquels and second season, Yin's Super-Powered Evil Side makes Contractors turn their powers against themselves. The (chronological) first time it happened, it was a Mind Control power; she hijacked it so an attacker mind-controlled himself into shooting himself in the head for a double whammy of this trope.
In the Read or Die OVA, the evil plan of the Big Bad is to use a composition of music called the Suicide Symphony as a Brown Note to make everyone in the world kill themselves so it can be repopulated by the people who were strong enough to resist.
Johan, from Monster, is so very very good at this despite not being psychic. He just gets himself into the head of his "friend" or his target, Mind Rapes them with his oh-so-reasonable voice and then hands them the pistol. His crowning moment would probably be convincing an entire village to wipe itself off the map.
The doujutsu from Basilisk (used by Hyouma and Gennosuke) works by turning homicide to suicide, meaning that it only works when the target is trying to kill the user.
The witches from Puella Magi Madoka Magica get more powers from pretty much brainwashing people into committing suicide via their "witch kiss". One has even been shown pulling this on a fairly large group of people, forming a ritual suicide cult ŕ la Heaven's Gate. Since witches live in (and never leave) "barriers", tiny parallel dimensions that can only be accessed by Kyubey, his Magical Girls and other people he chooses, this is the only threat they pose to normal, non-magical humans. Unless the witch in question is called Walpurgisnacht, who can manifest in the real world and physically attack normal people, or Kriemhild Gretchen, who just absorbs everything into her barrier.
The "latchers" of Ga-Rei Zero- attach themselves to the heads of their victims and have the ability to reanimate dead corpses or control a living being. In the first episode, one gets a hold of Mami, has her kill her commander, mock her soon to die comrades and then finally shooting herself.
Used at the beginning of Kurobara Alice. Dimitri, who has just acquired his Compelling Voice power after being turned into a vampire, accidentally drives his audience and then one of his girlfriends to kill themselves for him. He later uses it deliberately towards his friend and love rival Theo.
In the manga version of Tokko, Yukino is introduced when a phantom Puppeteer Parasite tries to make her commit suicide. She gets a different introduction in the anime version.
Numb Chandelier: "One: suicide by hanging yourself after the school boys rape you in turns. Two: suicide by cutting the rope after stripping naked and hanging from the school roof..."
Also invoked by Giselle Gewelle from the Vandenreich, who uses her Blood Magic to force a bunch of 11th Division members to commit seppuku.
In Jojos Bizarre Adventure, Enya Giel's stand, Justice enters an enemy's body and controls his/her movements, until they eventually die. She often uses this to torture the victim, but she attempts to force Hol Horse to kill himself as punishment for allowing J. Geil to die.
Likewise, Rohan at one point writes a command in Okuyasu to commit suicide via self-immolation should Jousuke inconvenience Rohan in any way.
Sorta done in the backstory of Fate Prototype. Enfante Terrible Manaka used her powers to force many girls of Fuyuki City to throw themselves into the Holy Grail and become human sacrifices to it. She also killed her dad in a similar manner, and would have murdered her little sister Ayaka (and the actual protagonist of F/P) had Saber not interferred.
In an issue of Alias, the Purple Man walks into a Denny's and orders 34 people to stop breathing so he can enjoy his eggs in peace.
In New Avengers' 2nd issue, a cliffhanger occurs during the breakout of The Raft: Killgrave orders Luke Cage to kill all the heroes, then kill himself. The next issue reveals it didn't work because Killgrave's been pumped with drugs to suppress his powers.
Also in New Avengers, Daniel Drumm possessed a man and shot himself in the head, making it look like the New Avengers were pulling this trope.
In The Umbrella Academy : Dallas, The Seance does this to Hazel and Cha Cha. Later in the series, The Rumor does a similar thing to President Kennedy, making the back of his head explode
"Look at me! I'm a TOTAL idiot!"
X-Men villainess Emma Frost, in alliance with Sebastian Shaw, took control of Ned Buckman, leader of the Hellfire Club, and had him gun down the other members before pointing the gun at his own head (though Shaw deals the killing blow himself).
Copycat of DV8 demonstrates it by mimicking the action of putting a gun to her head, forcing a security guard to do the same for real. CLICK.
In Iron Man, Technopath-assisted suicide occurs when Ultron takes control over the Church of Yinsen via the S.K.I.N. technology (liquid metal nanites coating their skin) and he makes one adherent shape her hand into a metal blade and impale herself on it.
A Corrupt Hick sheriff commits suicide after Jesse Custer uses his Compelling Voice on him in the Squickiest way possible.note He told the guy to go fuck himself. We're later told it was impossible to remove the sheriff's severed penis from his own rectum.
Later, as he attacks the home of his extremely deranged grandmother, Jody specifically calls him out on it, saying he could tell him to die but won't do it. Even though he earlier caused a bunch of mooks to catch on fire unassisted by yelling "BURN, you fuckers!"
Kordax, an evil ancestor of Aquaman committed suicide after losing a telepathic battle to his descendant. Not that their previous mental clash nearly put all sea life into a vegetative state. And Kordax kills himself, just to not flee from Aquaman's superior mental strength.
In the Firefly fanfic Forward, the "Inducer" psychics are capable of forcing this on people, though it takes time and effort on their part, as they have to drive the victim to deep despair to the point that they kill themselves.
Defied in The Immortal Game by Nihilus, who inflicts Rainbow Dash with a Compelling Voice and gives her the specific order "Do not attempt to take your own life." Played straight on one occasion when she temporarily retracts this order to make a point ("Stop breathing").
Village of the Damned is about women who give birth to villains who cause the populace to torture themselves on their own whims. In the remake, one girl causes her own mother, Christopher Reeve's wife, to walk off a cliff to her death.
Suggested but ultimately subverted in Constantine: at first, it looks as though the demon Mammon made Isabel commit suicide. However, it's revealed (via a visit to Hell) that Isabel knew she was going to be possessed for a vital role in an apocalyptic plot, and killed herself of her own free will.
In Mighty Morphin' Power Rangers: The Movie, Ivan Ooze takes control of the minds of Angel Grove's adults, who are then commanded to "leap to their doom" into a massive hole on a construction site. Fred rally the kids to save the adults as the Rangers battle Ooze, with Fred holding them back with a water cannon (with Bulk and Skull's help), but it's not until Ooze's demise that his spell is broken and the adults are returned to normal.
There are quite a lot of examples in the psychic-centered Scanners film series:
Darryl Revok, the villain of the first Scanners, makes one ConSec agent crash his car into a wall (where it promptly explodes) and another shoot two allies and then himself.
In The Ring Two, a Samara-possessed Aidan psychically forces a child psychologist to commit suicide by air embolism.
A man under the mind control of future One Nation Earth agents in the Apocalypse film series movie Tribulation is driven to throw himself out of the window of a high-rise apartment building after Tom Canboro prevents him from killing his wife, who is a Christian.
The same thing almost happens at the same time with Tom's brother-in-law Jason, except that he only falls out of a two-story house window.
This is inverted at the end of Gamer. Castle has Kable under his control, when Kable tells Castle to think of Kable stabbing him. Castle does just that, unconsciously, and gets himself killed. It's The Game used for murder.
The titular fallen angel Azazel of Fallen possesses several people throughout the film, making some of them kill themselves in ways to frame the protagonist for their "murders"; he makes one commit Suicide by Cop by pointing and shooting a gun filled with blanks at the protagonist.
The Djinn in the fourth Wishmaster movie is commanded to settle a legal case as part of a wish. He calls over to the troublesome attorney, and not only takes over his body to make him sign the agreement that he materializes in front of him, but directs him to pull out his own tongue, cut off his nose, slice up his cheek, and put a bullet in his brain.
When Morgan, Duncan and Kelson visit Brion's tomb to retrieve the Eye of Rom the night before Kelson's coronation, they're surprised by Lord Rogier, Earl of Fallon. Morgan and Duncan use their powers to make him sleep until they leave the crypt, then send him safely on his way with his memory erased. The next morning, Rogier is found stabbed to death by Brion's ransacked tomb, "with his own hand on the dagger and a terrible expression on his face, as though he fought whatever it was that made him do it," as Nigel puts it.
Minions sent by Deryni often have death-triggers or death-compulsions implanted in their minds. To give only one example, (from King Kelson's Bride) the assassins who attacked Kelson and Liam outside the Hort of Orsal's palace both had these, as well as mind-wipes to prevent anyone from reading their memories after they died.
Larry Niven's novel World of Ptavvs: About 1 billion years in the past, the Thrint used their telepathic mind control powers to become the rulers of the Milky Way by enslaving all other sentient life forms in the galaxy. When the slave races rebelled, the thrint used telepathic amplifiers to order them to commit suicide. All of them. Everywhere. Including Thrint. No, the Thrint weren't exactly the sharpest tool in the galactic-conqueror shed.
It's notable that they did consider that someone might find a way to hide from the command. (And some did!) So they rigged their weapon to go into stasis and come out every once in a while and do it again. It has lost effectiveness over time. It now only works on developed brains. But still blasts the Galaxy every so often.
The Skavis family of the White Court of vampires in The Dresden Files use this as their M.O. We're introduced to three major families of White Court, all of whom are Emotion Eaters and each family prefers feeding on one particular emotion, and the Skavis prefer despair.
In Those Who Walk In Darkness by John Ridley, this is why psychics are considered to have won the Superpower Lottery. Their standard method is to have targets shoot themselves, "the ultimate fuck-you."
In Tangled Webs one guy got his severed hand replaced with a slave's by his drow "ally". When he tried to disagree with her, the reason of this generosity became clear—the new hand snatched his own knife and put it to his throat. Just to make a point.
In Animorphs, Visser One does the possession variety - her last command to a host she needs to dispose of is to breathe (they're underwater at the moment.)
In a scene from the book of the movie, The Shadow, the villain is on the roof of the Empire State building when he's mocked by a sailor for his strange clothes. So he makes the sailor climb the fence and jump. It's particularly horrible because the sailor is screaming that he doesn't understand what's happening.
In the movie, it's actually Played for Laughs immediately afterward; we cut to our heroes walking down the street and Lamont, beginning to suss out Shiwan's evil plans, says "It's all falling into place". The Empire State Building is in view, and as soon as he says that, the sailor bounces off one of the ledges like a ball.
In The Sword of Truth series Confessors, with their Mind Control powers, are fully capable of ordering a person to kill himself. However, more powerful ones, like Kahlan, can simply give an order to drop dead... and it will be followed to the letter. Kahlan does it at least once before the series start, and twice during the books. Jagang has also ordered one of his servants to die, merely to make a point.
In Sergey Lukyanenko's Autumn Visits, the Envoys can lead most people into following their commands. This usually makes the person incapable of complex independent thought. This power is most used by Mary, the Envoy of Good, who uses it to force others to do her bidding and then kill themselves, all in the name of Good. In fact, at one point she tells the driver of a car she stopped to get a lift to drop them off and then accelerate to 200 kph and slam into a gas station. Obviously, she believes in There Is No Kill Like Overkill, as this would also kill numerous innocent bystanders. Mary's justification? They're all going to Heaven for their sacrifice. There is a reason why all the other Envoys consider her to be the most dangerous of them all, and two of them used to be Joseph Stalin and Adolf Hitler!
In Dances on the Snow, another of Lukyanenko's books, the Big Bad tries this with the protagonist and a girl by using Compelling Voice to force them to jump into molten metal. Captain Stas, a Jedi-like Knight of Avalon, uses the same voice to countermand her orders, turning it into a tug-of-war of sorts. They Big Bad ends up dying before the teens can jump.
In Stephen King's novel Firestarter the head of a fictional secret U.S. government intelligence agency muses about using the protagonist's powers of mental domination to "suggest in a low voice of utter conviction that suicide was the best answer" to Teddy Kennedy.
Averted in Starcraft Ghost: Nova, where the gang leader obtains through a friend a psychic blocker to prevent Nova from doing exactly that. Unfortunately, he never reads the manual which prohibits the use of the device for more than 18 hours at a time, as it can lead to unbalanced psyche. Time Skip a year, he hasn't taken it off since he put it on. Now, he's completely off the reservation, shooting underlings for a tiny infraction, even ones he imagines. In the end, Nova does a variation of this by using her powers to make the gang leader's remaining lieutenant shoot him.
Mentioned in Goblet of Fire, when Moody highlights the horror of the Imperius curse by offering to make the spider he's controlling jump out the window or drown itself.
In the Ghosts of Fear Street book Horror Hotel Part 1, a ghost mistakes the protagonist for his murderer due to Uncanny Family Resemblance, and possesses him every night to try to force him to kill himself. The possession only lasts from midnight to 12:15, however, since that was how long it took the ghost to die.
In the Firebird Trilogy, when the Shuhr are not interested in playing with their victims, they often resort to this to remove those who are no longer of use to them. To accomplish this, they weave the desire to commit suicide into the victim's mind, reworking any bits of their personality that would object to suicide.
Ahkté in The Hour Before Morning unapologetically uses this to further his revolution; he considers the pain he experiences part of the bargain.
A young Hego Damask (who grows up to be the titular Darth Plagueis) does this to a youth that he disliked. When the youth pushes past Hego, Hego touches his arm, locks eyes with him and tells him to jump out the window. They later discover his broken body in the courtyard.
In the Dean Koontz novel Sole Survivor and it's TV adaptation the psychic childSSW 89-58 uses this to kill people. Theres a fun scene where he forces someone to jump off a building with the victim forced to scream how much he's enjoying it.
In Mentats of Dune, Valya Harkonnen is the first Reverend Mother who masters the Voice and uses it to kill her rival Dorotea immediately after Mother Superior Raquella Berto-Anirul's death by giving Dorotea her dagger and commanding her to stab herself in the throat. The supreme irony is that Raquella has just Mind Melded with Dorotea and gave her the necessary insight to work together with Valya to make the Sisterhood great. Also ironic is that Dorotea has Atreides blood through her grandmother Raquella, something Valya does not know; so Valya unknowingly kills one of her family's bitter enemies. This is possibly the first time someone uses the Voice to override a person's self-preservation instinct.
One of the Potentials in Buffy the Vampire Slayer did this after The First did some Mind Rape, preying on her insecurities and essentially talking her into killing herself.
The Sycorax threatened the Earth with this in the Doctor Who episode "The Christmas Invasion": they took control of about a third of the Earth, made them all march to the nearest high place, and were going to order them to jump if their demands weren't met. It turned out to be a bluff—the form of mind control couldn't overcome the survival instinct.
Also, in "The Green Death," the BOSS computer brainwashes people into committing suicide.
And in "Terror of the Autons", the Master hypnotizes Jo into suicide-bombing UNIT HQ. A slight subversion, since he doesn't expect the bomb to succeed- it's part of his plan to lure the Doctor into a trap.
Sylar attempted this in his first appearance, by telekinetically making Matt's partner turn the gun to her head. Matt interrupts before s/he can pull the trigger though.
Used in the episode 'Plan B' of The Vampire Diaries. Jenna is compelled by Katherine to kill herself. Thankfully, she survives.
Used in The X-Files by the serial killer Robert Patrick Modell (episodes "Pusher" and "Kitsunegari"). Modell possesses the ability to "push" his will onto others, and demonstrates it several times. When captured by police, he causes his driver to crash into an oncoming truck; later, he talks an armed SWAT team officer into dropping his weapon, picking up a can of gasoline, dousing himself and the surrounding area with it, and lighting himself on fire. He doesn't even have to be there in person - he talks the lead detective hunting him down into a heart attack over the phone. At the climax of "Pusher", he talks Mulder into playing Russian roulette, which Mulder obeys—but shoots Modell as soon as Modell tries to make him pull the trigger on Scully.
Telepath Lyta Alexander of Babylon 5 forces a Drazi hit man to shoot himself after he tries to kill her. It shows her increasing power after she was Touched by Vorlons.
During the season 2 finale "All Hell Breaks Loose", the Winchesters, Ellen, and Bobby go up against Jake, the last of Azazel's psychics besides Sam. Jake effectively holds Ellen hostage by using Compelling Voice powers to make her hold her gun to her own head.
In the earlier episode "Simon Said", Dean was about to shoot himself in the head because of Webber's mind control until Andy shot Webber. Webber also made other people kill themselves.
The Watcher on No Ordinary Family uses a telekinetic variant, forcing Dr. Chiles to ingest a fatal dose of medication and write a suicide note with his hand.
In Kamen Rider Agito, the Overlord of Darkness can force the Lords to kill themselves if they violate the taboo to not kill normal humans.
Anyone confessed in Legend of the Seeker can be ordered to off themselves. While this normally doesn't happen, a variant happens in the series finale, where Kahlan, who is herself confessed by Nicci, confesses four Mord-Sith and orders them to kill each other. They do so in unison.
Earlier Richard did the same thing when to some D'Haran soldiers when possessed of the power of Orden.
The Ghost does this twice during the premiere episode. He forced one victim to jump off a building and a minion who was 4 minutes late to a meeting to drink bleach! He also carried out assassinations offscreen by using proxies to cause a fatal accident such as by crashing their car into his target, killing both.
In "Bill and Gary's Excellent Adventures", Nina reveals that she was afraid that she did this to her ex-boyfriend when she yelled in anger for him to kill himself. Fortunately, it's revealed at the end that it wasn't her, he was just Driven to Suicide instead.
In season two, we are introduced to Kimi Milard, an alpha with a similar ability to Nina's who just LOVES to do this to people.
Dollhouse. Boyd is hit by a mind-wiping device and given a personality that obeys Echo's order to strap himself to explosives and blow up Rossum HQ. He always tries to be his best, you know.
Molly Griggs developed a mind control computer program and could email instructions to a person to kill someone. At first, she wasn't powerful enough to override the human survival instinct to make them commit suicide but in "The Vengeance Chronicles" she tries to make Lex Luthor kill himself using the program.
In the episode "Persuasion", CEO Bob Rickman ends an investigation of his company when he used his handshake-induced mind control power to make an agent of an EPA-like organization who was onto his corrupt practices jump out of a window. Later, he and Kyle Tippet, who has the same power, wrestle for control over a handgun while engaged in a battle-of-wills using their powers to make the other commit Psychic-Assisted Suicide, a battle which Bob loses.
Happens at least once in the Russian mini-series Wolf Messing: Seeing through time, based on the (heavily criticized) memoirs of a Real Life psychic by that name. The first time he does this is as a child out of fear, when he is on a train bound for Warsaw without a ticket and is confronted by a conductor. At first, Wolf makes the man believe that a random piece of paper is a ticket. A few minutes later, though, as Wolf is crossing into another car, the same conductor once again asks for the ticket. The scared boy induces the man to jump off the moving train, although the fall doesn't appear to be bad. The second time was deliberate, as the man in question (an SS officer) has hounded Wolf all his life and shot two of his friends in front of him. When Wolf sees him among the POWs at a Soviet factory, he forces the guy to assault a guard and run, resulting in him being shot. Wolf is wracked by nightmares afterwards, though, especially since he still remembers a promise he gave to his rabbi as a boy not to abuse his powers. His wife tells him that the Nazi deserved it.
Interestingly, this is the first time Wolf is able to use his abilities to influence the man, who possessed a strong enough psyche to resist earlier attempts. However, by that point, he is clearly a broken man in the hands of the hated enemy with Germany on the verge of losing the war. He is clearly horrified when he sets eyes on Wolf, and this (coupled with Wolf's desire for revenge) is likely what allows Wolf to overcome his mental defenses.
A variation: the Talosian Keeper threatens to destroy the Enterprise unless Pike releases him, and Vina confirms that they are capable of doing so by using their illusions to fool the crew into operating the wrong controls.
In the Star Trek film follow-up comic Star Trek Ongoing, Gary Mitchell, after being raised Up to Eleven by the Galactic Barrier, kills his friend Lee Kelso by using telekinesis to have Kelso point his own phaser at his own temple and fire. It's not clear if the phaser is set to "stun" or "kill", but it doesn't matter at point-blank range. In the original timeline, Mitchell remotely chokes Kelso with some cables. It seems Kelso just can't catch a break in any timeline.
Darklighters in Charmed are shown to do this to potential Whitelighters. If they kill the potential, that just makes the potential become an actual Whitelighter, but if the potential kills herself, then the suicide taints the soul and makes it unfit to become a Whitelighter. The Darklighters mostly work by making their victims' lives completely unbearable, but there seems to be a Compelling Voice element to it as well.
"The Inheritors". One of the men with the meteorite fragments in his head uses his psychic powers to force a man to almost take his own life as a warning.
"The Special One". At the beginning of the episode Mr. Zeno uses his mental powers to make a man jump out a window to his death. Near the end of the episode he tries to do it to another man but is foiled by the man's son.
"Burned": Ginger tells a man "I hate your guts!" He takes this literally and commits Seppuku. Granted, Ginger didn't know he would do that.
"The New Girl": Tyler can possess other people, then make them kill themselves, snapping back to his original body at the moment of death.
Adalind does this to a Verrat soldier in Grimm using Mind over Matter powers. When asked, she admits that the goal was to get him to drop the gun instead of putting it under his chin and firing, but Adalind has only recently regained her powers and is out of practice. It's also possible that it was Adalin's baby who really did the act.
Many roleplaying games avert this, making explicitly self-destructive orders either harder or just flat-out impossible even with domination powers. Of course, short of "blow your own brains out", what is considered self-destructive is quite open to interpretation.
In Warhammer 40,000's background, psykers with mind controlling or compelling abilities can force people to kill themselves. Tabletop sorcery tends to be more straightforward in its methodology, but the old Slaaneshi "Lash of Submission" psychic power, which could move an enemy unit up to 12 inches, was perfect for convincing a foe to leave that dirty old trench and stand in a nice open field, right in front of your firing line.
New World of Darkness games mostly averts this - it's made very clear that the human survival instinct is too strong to just willingly give into commands that are blatantly suicidal ("Blow your brains out") without immense amounts of power.
Then again, they may be willing to obey commands with a little bit of leeway ("Drop your weapon in the middle of this firefight."). Also, there is no penalty for making them do something REALLY fucking stupid. Moon a Wolverine, incite them to ignore a cop's orders, flip a vampire the bird... provided it does not borderline ensure death, you can get away with it.
"Wouldn't you like a nice hot bath?" while directing them to a pool of acid that the victim has no knowledge of being acid.
There are a few powers across game lines that do this. Vampire: The Requiem features a bloodline known as the Children of Judas (typically Embraced right before — or in rare cases, right after — committing suicide) who have a bloodline-based Discipline that allows them to drive people to despair and, in time, suicide attempts.
Sin-Eaters can do the same thing with the highest ranks of the Stygian Curse.
Dungeons & Dragons has a power in the Psionic Handbook called "Death Urge". As the name implies, it activates a latent suicidal impulse, causing the victim to immediately turn their weapons upon themselves. There are also powers that disrupt the victim's autonomic processes, so that they have to actively make themselves breathe - if they forget to, they start suffocating.
This Play By Post deserves mention, if only for the sheer levels of Overkill involved explanation Because the attack(s) from Death Urge is an automatic critical hit and the opponent has an ability that grants him an extra attack upon scoring a critical hit, he is forced to continue attacking until he runs out of ammo.
The psion class in Fourth Edition has several powers that force an enemy to attack any creature of his choice. This includes making them attack themselves.
Plutomancers in Unknown Armies can give someone a sudden urge to hurt themselves. Appropriately for their school's money-based theme, the spells used for this are called Mercenary Will and Bankrupt Will.
An image of a Mind Melter in Rifts shows him standing behind a soldier on his knees, soaked in gasoline, and holding a match with a dazed look in his eyes.
Psycho Mantis of Metal Gear Solid tries this, and succeeds if you don't knock Meryl out before she does it.
In Clive Barker's Undying, the spell Invoke allows you to reanimate monsters and destroy undead. If you use it on a living human being, they will jerkily turn their weapon on themselves as they beg for their life in terror, slitting their own throat or blowing their brains out. Doesn't seem to work on primitive humans.
In the MUD Achaea a few Classes have the ability to briefly take control of other players - the Serpents via hypnosis, and the Monks via telepathy. Both styles are mostly used for theft, by forcing players to hand over their backpack - but can also be used to force people to commit suicide, most popularly by making them kick the nearest (unbelievably overpowered) city-guard.
Second Sight doesn't allow this directly, but nothing prevents you from jumping off a cliff while possessing someone. The game even tracks how many times you've killed a host.
Like just below, start shooting at an enemy while possessing someone. Eventually one of them will die, and the other will be weakened enough to be easily dispatched.
A secret key combinationnote Inventory and Sniper Zoom keys (PC)/both analog sticks (console) held at the same time for several seconds can make them put their gun in their mouth as well.
In the Oddworld series, there are two ways to release control of possessed enemies— either release control and make them explode violently, or make them find the nearest Bottomless Pit, landmine, meat grinder, or other deathtrap.
The intro to BioShock 2 involves Sophia Lamb taking control of Subject Delta and ordering him to commit suicide.
From the first game, "Would you kindly go get stepped on by a Big Daddy." Words directly toward Jack from Fontaine, but they don't work because Jack had already taken the antidote to the Mind Control serum.
Unfortunately, Fontaine had another failsafe - Code Yellow. "I just told your heart to stop beating. The heart's a stubborn muscle, though, so it'll take a while."
The Dnyarri in Star Control 2 have the limitation that, if anyone actively under their compulsion is hurt, they will feel it. What can happen, and will if you confront one without protection, is forcing you to go "get lost in a bad neighborhood".
Bishamon from Darkstalkers has a special move that makes the opponent catch his blade and is then forced to commit suicide with it. Of course, like many of his moves that cut the opponent in two, it doesn't stick unless you end the match with it.
In Knights of the Old Republic 2, in Nar Shadda, if you've taken the proper powers, you can force two mercenaries to give you all their items and then go jump off the walkway to their deaths.
This happens in a cutscene in Deus Ex: Human Revolution. The culprit is a hacker remotely guiding the augmented thug. When discovered by Adam, he overrides the thug's augmentations, forcing the guy to shoot himself.
In the remake of the classic Syndicate you can perform this in two ways. The suicide power forces the targeted enemy soldier to pull the pin from a grenade and stand there screaming and holding it, with predictably messy results; it's best used when soldiers are part of a group. (We aren't told what happens if the target doesn't have grenades to pull pins from; no enemy you can inflict suicide on doesn't). And then you have persuade, which forces the targeted enemy soldier to fight on your side. If their former allies don't manage to kill them, when the effect ends they'll shoot themselves in the head - while screaming, natch. Granted, you aren't doing this as a psychic - rather, you are hacking chips implanted in their brains, but still.
In Metro 2033, this is the last resort of the Dark Ones, who try to force Artyom to throw himself from the top of Ostankino Tower.
In the Assassin's Creed series, this is one of the powers of the Apples of Eden. As artifacts of the First Civilization, they were originally used to dominate mankind, but in the modern era, the Templars have sought them out to use in their own world domination schemes, and when an Assassin gets his hands on one... things get deadly.
In Assassin's Creed: Brotherhood, Ezio uses the Apple to incapacitate or kill legions of Templar soldiers. Some go mad, some die when their brains melt from the inside, and some kill themselves.
In Assassin's Creed: Revelations, an aged Altaďr uses his Apple to defeat waves of attacking Mongol soldiers by conjuring phantom Assassins; the implication is that the Mongols are convinced that they have been killed, so they die.
In Lucius, Lucius develops the power to possess weak-willed people. He uses it to make one of the maids throw herself off a balcony, the gardener place his head inside a lawnmower, and his tutor blow his brains out with a revolver.
BioShock Infinite has a Vigor (this continuity's version of plasmids) called Possession, which causes enemies to briefly become allies. It will then make Mooks (even strong ones, but not heavy hitters) kill themselves when the Possession runs out, which they do in various graphic ways depending on the weapon they're equipped with. Averted in the DLC game Burial At Sea: Episode 1.
In The Crooked Man, while playing as Paul, you have to stop David from killing himself. During this you see the Crooked Man's arms around David holding the gun to his head, and while they're only there briefly it's enough to show that David is being manipulated and isn't fully in control of his own actions.
In Cry of Fear, this is one of the methods the "Drowned" enemy type uses to attack you - if you come close enough to one of them with a gun equipped, it will attempt to force you to shoot yourself.
In Dishonored, there's an achievement for "causing five unintentional suicides". Actually doing so takes a bit of work. While Corvo can possess enemies briefly, he can't make them use weapons - only move around and open doors. So, what he can do instead is to goad an enemy into shooting at him, stop time while the bullet is in midair, possess the enemy that just fired, move into the bullet's path, and release the possession so that Corvo doesn't die himself. Simple!
That or just have them walk into an electric wall.
Hexers in Etrian Odyssey have the ability Evil Eye, which grants them control over an enemy. Once dominated, they can follow up with the spell Suicide, which forces enemies to attack themselves.
Attempted in Black Rose by a Handwaver on invading soldiers in issue one. A good portion of them nearly did it but the attempt failed after the Handwaver was shot by a soldier who maintained control of their mind.
Apparently a common act of Dr Bright of the SCP Foundation: "On 01/██/20██, Dr. Jack Bright was 'given the bird' on his way to the movies by a passing motorist. As is fairly normal for Dr. Bright, he tracked down the owner of the vehicle through the car's license plate, then proceeded to drive the gentleman to suicide via the use of SCP-720."
In The Salvation War, it is mentioned that Abigor and some angel once had a competition about who will cause more lethal incidents among humans. Abigor won 106 to 102.
In Batman: The Animated Series, The Mad Hatter once told two thugs who were attempting to mug him to "go jump in the river." Since it was in a kid's cartoon, Batman caught them right before they jumped off the bridge, but it still counts.
The Monarch attempts to do this to Dr. Venture through a bizarre psyche-invading machine, but ultimately fails; Doc's mind is already so screwed up that something like that barely registers as a migraine to him.
When Everybody Loves Hypnotoad is interrupted in the Futurama movie "Bender's Big Score" the title character forces the producer to kill himself.
In Avatar: The Last Airbender , Hama has the ability to control other people by bending the water in their bodies, she forces Sokka to draw his blade and attempt to impale Aang(who she also control), forcing Katara to learn blood-bending to make her stop. While not psychically powered, it's generally the same thing in practice.