Roronoa is the surname of four known characters, three of which are from the same family:
- Roronoa Family
- Roronoa Zoro, the swordsman of the Straw Hat Pirates, Arashi's son and Pinzoro's grandson.
- Roronoa Arashi, a man who died in a battle with pirates, Pinzoro's son and Zoro's father.
- Roronoa Pinzoro, a swordsman in Shimotsuki Village, Arashi's father and Zoro's paternal grandfather.
- Roronoa Zoro, a resident of Gacha Gacha Island.