Glen David Brin (born October 6, 1950) is an American ScienceFiction writer, creator of the Literature/{{Uplift}} universe. He is also the author of a highly amusing (and packed end to end with puns and references) novel called ''Literature/ThePracticeEffect'', and wrote the story for ''VideoGame/EccoTheDolphin: Defender of the Future''.

Around the TurnOfTheMillennium, Brin gained a measure of notoriety among ''Franchise/StarWars'' fans for printing a blisteringly critical series of essays regarding that universe's philosophies and messages. He and Creator/MattStover later compiled them into a book called ''[[ Star Wars on Trial]]''.

Brin is probably the best known of the authors sometimes referred to as "the Killer B's", which also includes Creator/GregBear and Creator/GregoryBenford. The three are often credited with helping to revitalize [[MohsScaleOfScienceFictionHardness hard SF]] after the rise of {{Cyberpunk}}. They became associated when each wrote one volume of a prequel trilogy to Creator/IsaacAsimov's ''Literature/{{Foundation}}'' series.

!!Works by David Brin with their own trope pages include
* ''Literature/{{Uplift}}'' series
* ''Literature/ThePostman''
* ''Literature/ThePracticeEffect''
* ''Literature/KilnPeople''
* ''Literature/{{Existence}}''

!!Tropes found in his other works include
* AbsentAliens: A recurring theme; two instances are the short stories "The Crystal Spheres" and "Lungfish".
* {{Aesoptinum}}: "The Giving Plague".
* AlienSpaceBats: ''Thor Meets Captain America'' has Nazi Germany essentially winning World War II because they were able to summon the Norse gods to fight on their side. The trope was used to make a point here: this was the ''most plausible scenario'' the author could think of that would have the Nazis winning.
* {{Balloonacy}}: {{Discussed}} in ''Glory Season''; the balloon-like creatures called zoor have enough lift that children can can ride the larger ones by grabbing onto their tentacles.
* BrokeYourArmPunchingOutCthulhu: In "Thor Meets Captain America", a soldier broke the spear by which he ought to have been killed over his knee. The spear belonged to Odin, and his knee didn't really like the treatment.
* CyberPunk and PostCyberpunk: A recurring theme (expressly stated in his nonfiction) is that the choice between CyberPunk and PostCyberpunk depends on whether we try to restrict the benefits of technology to the "proper authorities" or make them available to everyone.
* FeudalFuture:
** "The Fourth Vocation of George Gustaf" explores the possibility that even in a highly technological society, humans are hard-wired to need royalty. The sentient computer(s) running much of Earth's near-utopian future manipulate George, a highly successful but bored intellectual, into becoming King of Earth by "allowing" him to run a sociological experiment in which he claims to be heir of most of the defunct thrones of Europe and Asia. Then they rewrite the human database with the intention of keeping him on the throne -- with no way of proving his original hoax.
** ''Literature/ThePostman'' also features one, due to the US collapsing after a nuclear war, with violent survivalists taking over part of the country as its new feudal overlords.
* {{Gendercide}}: In ''Glory Season'', a spaceship carrying feminist colonists goes to a far, far away planet in order to create a perfect society. The women are in charge, and whenever one of them finds their 'niche' in society, they clone themselves over and over. There are men left alive, because the scientists knew that if their society was completely stagnant, eventually something would kill them. So, there are the clone children, or "winter children" who are the majority of the population, and then "summer children" who are born when men who have proven themselves useful get to vent their genetically suppressed lusts during the summer. The summer children are also called "variants", and the protagonist's goal through the book is to find her 'niche' and be allowed to have a clone child.
* {{Ghostapo}}: "Thor Meets Captain America", later adapted into comic form as ''The Life-Eaters'', has the Nazis murder almost 17 million people as part of a gigantic Necromantic ritual intended to bring the Norse Gods to life, fighting on the side of Hitler. And it works. The author has said this was an attempt to make the Holocaust have some actual sense for the Nazis.
* LadyLand: ''Glory Season'' takes place on a planet settled by separatist feminists who have been genetically engineered to have a different reproductive cycle than other humans. On this planet, if a woman conceives a child during the winter, she gives birth to a genetically identical clone of herself; if she conceives during the summer, she gives birth to a child who has genes from both parents. "Clans" of cloned women are the dominant forces in society, while males and non-clone females are marginalized. Interestingly enough, the author avoids portraying the planet as exclusively either a utopia or a dystopia, instead showing both good and bad aspects of the society and its members.
* LivingGasbag: ''Glory Season'' has the zoor, flying jellyfish-like creatures which range from twenty meters up. Sailors like to tie ribbons and messages to their tentacles, and the larger ones can lift a child.
* PoweredByAForsakenChild: In "Thor Meets Captain America", the Nazi Holocaust was an ambitious and successful attempt at industrial-scale necromancy.
* RuleOfFun: Makes it clear that his ''Star Wars on Trial'' articles are primarily for fun even if they're written as SeriousBusiness.
* RomanticismVsEnlightenment: His views fall firmly on the Enlightenment side, with many criticisms of Romanticism both in fiction and real life.
* SecondPersonNarration: "Reality Check", in which you really are the main character. You're supposedly in a LotusEaterMachine, and the narration gets increasingly frantic as you fail to snap out of it. A clever experiment in writing, but one that can be easily defused by reading the story backwards.
* ThroneMadeOfX: In "Thor Meets Captain America", when the captured Allied team is taken to meet the Norse Mythology deities who rule the Nazis, the god Odin is seated upon an ebony throne -- the dark wood a foreshadowing of the dark fate that awaits the team.
* TrulySingleParent: In ''Glory Season''.
* WeirdHistoricalWar: ''The Life-Eaters'' is premised on the idea that mass human sacrifice can create godlike beings, which the Nazis use to create Nordic gods to fight for them. Then other countries get in on the game, and things get pretty horrible.
* WowingCthulhu: "Thor Meets Captain America". After the Allied team is captured, they are taken before the Norse Mythology deities who rule the Nazis. One of the Free British volunteers defies them and insults them, and is beaten to death by their Nazi captors. Odin orders that the volunteer's body be given full funeral rights and says "We value courage, even in our foes. I want that brave man with me, when Fimbul-Winter blows."