2104 was a year in the 2100s. In this year:
- the most influential event to take place was the Apocalypse War, which had lasting effects on the world of Judge Dredd.
- Judges Dredd, Feiffer and Rourke cornered Slab Tynan, all three shooting at once and sending Tynan to The Vaults under the Grand Hall of Justice.
- The Apocalypse War was declared by East Meg One upon Mega-City One, initially by means of introducing the Block Mania chemical to the water supply.
- Chief Judge Griffin
- Supreme Judge Josef Bulgarin and the other two members of the Sov-Blok Diktatorat
- Med-Judge Pearce
- War Marshal Kazan
- Fink Angel
- Owen Krysler
- Bizmo Klux
- SJS Chief McGruder becomes Chief Judge McGruder of Mega-City One
- 17th annual Black Atlantic Swim took place in July, with one competitor reaching the goal of swimming from the Brit-Cit West Sector to Mega-City One, only to be turned back by Judge Dredd.
- 11th Annual All-Mega-City Block-Out Final (winners: Doris Day Block)
The following stories were set in the year 2104:
- Judge Dredd
- Judge Dredd (series): The Other Slab Tynan, Judge Dredd Annual 1984
- Judge Dredd: The Apocalypse War 2000AD Prog 245 to Prog 267 and Prog 269 to Prog 270
- Judge Dredd: Block Mania 2000AD Prog 335 to Prog 244
- Meka-City Part One
- Judge Dredd The Roleplaying Game: Judgement Day
- Judge Dredd (series): Destiny's Angels Part 8, 2000AD Prog 288
- Judge Dredd (series): The Night of the Rad-Beast Part 1, 2000AD Prog 296
- Judge Dredd (Daily Star) strip 27, Annual Swim, 1982
- Judge Dredd (series): Block-Out at the Crater Bowl, 2000AD Sci-Fi special 1983