Red can refer to:
- Characters
- Red King: a Marine Vice Admiral.
- Shanks: one of the Four Emperors who is commonly known by the epithet "Red Hair".
- Redwolf: a Beasts Pirates Gifter.
- Sakazuki: the current fleet admiral of the Marines who went by the alias Akainu (meaning "red dog") as an admiral.
- Patrick Redfield: the main antagonist of "One Piece: Unlimited World Red", who is commonly known as just "Red".
- Groups
- Red Hair Pirates: the pirate crew captained by "Red Hair" Shanks.
- Nine Red Scabbards: an ennead of retainers of the Kouzuki Family who served Kouzuki Oden.
- Red Arrows Pirates: Baron Omatsuri's pirate crew in the sixth One Piece movie.
- Locations
- Red Line: the One Piece world's only continent approximately located around the entire prime meridian
- Red Port: one of the two ways to cross the Red Line when traveling on the Grand Line.
- Risky Red Island: one of the first three islands in the New World to which one of the needles on the New World Log Pose points after coming from Fish-Man Island.
- Media
- Chapter 204 which is titled "RED".
- One Piece Red: Grand Characters: the first databook.
- One Piece Film: Red: the 15th movie.
- Red Hair of Class 3-Sea Time: the 9th omake in the series and the first super deformed Chibi-style omake.
- One Piece: Unlimited World Red: a video game in the Unlimited series.
- RED DOG RED: a song performed by Sakazuki for the One Piece Nippon Judan! 47 Cruise CD.