Warhammer 40,000 / Referenced By

One page from a comic of Rick and Morty has Morty looking over a tabletop game called Starhammer◊, which features a mascot that looks remarkably like a S.M. Terminator wielding a power sword.

In Boldores and Boomsticks Weiss' Ralts calls out, "Fly me closer, I want to hit them with my sword!" while waving a blade she made with Psycho Cut.
Harry Potter and the Methods of Rationality contains a few examples:
- Harry's army is called the Chaos Legion.
- When meeting with Draco Malfoy before the first battle, Harry is seated on a golden chair that he insists on calling a throne.
- After a few months of fighting with the Chaos Legion, Neville christens himself a Chaos Hufflepuff.
- Harry performs a showy ritual involving apparently sacrificing the Chaos Gods to intimidate bullies.
Jaune Arc, Lord of Hunger:
- In "Chapter 14: Vytal", after Jaune supercharges Nora with his Force lightning during JNPR's tournament match against BRNZ, Nora screams "KILL! MAIM! BURN!" while charging at Brawnz and Roy.
- While resisting the influence of the Mask of Nihilus, Alix roars out "Loyalty...is its own reward!" This is a reference to Lion El'Johnson, the Primarch of the Dark Angels.
Story Shuffle: The Table of Contents, referencing some summaries of Warhammer 40,000, that go like, "In the grim darkness of the far future, there is only war.":
26. Marine Biology (EoH compatible)
[...]
In the grim wetness of the ocean depths of Ungula, there is mostly war.

In an unpublished epologue to the final Doctor Who New Adventures novel, The Dying Days, a future incarnation of the Doctor teases Jason Kane by claiming that the last time he saw Bernice Summerfield, she was being inaugurated as God-Empress of All Human Space.
The Dresden Files: In the short story "The Warrior" we learn that Father Forthill, Michael's handler in his war against evil, is technically an inquisitor. Of the Ordo Malleus, to be more specific.
The Expanse: In Persepolis Rising the Laconian marines wear bright blue power armor with an eagle symbol across the chest.
Rivers of London: In False Value, when Peter learns that his American counterparts call themselves the Ordo Machinis Spectandis, he can't resist making 40K jokes.
The murder victim in Peter T. Garratt's detective story "The Next Big Thing" was a writer who did tie-in novels for a wargame called ''Battlespear 20,000", described as involving fantasy races, but in space.

Doctor Who: The human culture depicted in "Nightmare In Silver" is an empire with an "Imperial Guard" that casually destroys whole planets to deal with alien infestation, and their Emperor is virtually worshipped. Even the uniforms bear a substantial similarity, and they wield laser weapons. As a Mythology Gag within a Shout-Out, the Emperor's full name is Emperor Ludens Nimrod Kendrick Cord Longstaff the 41st.
The Expanse: When discussing plans to rescue the Nauvoo and refit it into a warship for the Outer Planets Alliance during "Fight or Flight," Drummer sarcastically tells Fred Johnson that "A cathedral converted into a warship sounds like the heart of a great and lasting nation."

In Civilization: Beyond Earth, the Purity LEV-Destroyer looks like a cross between a Battle-Barge and a BOLO.
Heroes of the Storm: One of Kael'thas's quotes makes reference to the popular Khornate battlecry: "Blood for the Blood Elves! Sun for the Sun King!"
Mass Effect 3 has the turian leader called a "Primarch".
Metroid Prime 3: Corruption contains a reference to a conflict called the "Horus Rebellion."
Paladins:
- Atlas' armor design (his pauldron and backpack) seem to draw inspiration from 40k Space Marines, which has not gone unnoticed by some players.
- When playing Viktor in his V1-KTOR skin, he says: "In the grim darkness of the grim dark, there is only grim darkness."
- When Terminus goes on a killstreak, he says: "Kill! Maim! Burn!"
Piratez: Some weapon names, most notably the lasgun and the chainsword. Also the race of ratlings.
Warcraft: One of the Stop Poking Me! quotes from the Gryphon Rider (Warcraft III) says: "This Warhammer costs 40k!"
DisciplesLiberation: Custodes Helmets can be seen in as background props.