The Nameless One may refer to:
- The Nameless One (character), protagonist of the computer role-playing game Planescape: Torment
- Nameless One (comics), several characters in comic books
- The Nameless One (novel), a 2014 novel by Paul Stewart and Chris Riddell
- "The Nameless One" (song), a 1993 single by Wendy James
- The Nameless One, arch-villain of the Pellinor fantasy series by Allison Croggon