Armageddon 2001 was a 1991 crossover event published by DC Comics. There were two bookended one-shot issues, published in May and October; the story also ran through that year's DC annuals. After the event, there were two limited series, Armageddon: The Alien Agenda (which was a direct sequel) and Armageddon: Inferno (which was only tangentially related).

Each participating annual explored potential possible futures for its main characters, much in the manner of Marvel Comics' What If? . The guiding hands behind the series were editor and writer Dennis O'Neil, writer Archie Goodwin and artist Dan Jurgens.