This page includes a list of Superman's known adversaries. Inclusive to this list are foes of the mainstream Earth-One, Earth-Two, New Earth and Prime Earth DC Comics versions of the Man of Steel, as well as versions from alternate realities and various media adaptations.
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All items (1436)
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- Octopus (Earth-One)
- Odessa Vexman (Superboy TV Series)
- Oliver Queen (Dark Knights of Steel)
- Omicron (Earth-One)
- One-Thousand (New Earth)
- Organizer (Earth-One)
- Orphan III (Prime Earth)
- Oscar Lanchester (Earth-Two)
- Oswald Cobblepot (Earth-172)
- Oswald Cobblepot (The World of Tomorrow)
- Oswald Loomis (Earth-508)
- Oswald Loomis (Earth-One)
- Oswald Loomis (Earth-Two)
- Oswald Loomis (New Earth)
- Oswald Loomis (Smallville)
- Oswald Loomis (Superman 1988 TV Series)
- Oswald Mandias (Earth-One)
- Otis (Donnerverse)
- Otis (Tiny Titans)
- Otis Grisham (Arrowverse: Superman & Lois)
- Output (New Earth)
- Override (New Earth)