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.