Straw Hat can refer to:
- Monkey D. Luffy: a pirate captain known as "Straw Hat Luffy" and the main protagonist of the series.
- Straw Hat Pirates: a pirate crew led by Monkey D. Luffy and the other main protagonists of the series.
- Straw Hat Grand Fleet: a fleet formed by seven organizations who vowed to serve under Luffy's crew.
- Impostor Straw Hat Pirates: a pirate crew led by Demaro Black that attempted to impersonate the real Straw Hat Pirates.
- Straw Hat: Luffy's signature hat given to him by Shanks from which he gets his epithet.
- Straw Hat's Separation Serial: a cover page mini-series depicting what happened to the other eight Straw Hat Pirates after the crew was separated by Bartholomew Kuma at the Sabaody Archipelago.
- One Piece 3D: Straw Hat Chase: The 11th One Piece film.