Peko may refer to:
- Peko, an ancient Estonian and Finnish god of crops
- Peko (Seto epics) by Anne Vabarna
- Peko (surname)
- Peko, a fictional cartoon dog, namesake of anime film Doraemon: New Nobita's Great Demon—Peko and the Exploration Party of Five
- Peko-chan, a fictional cartoon girl, the mascot of Japanese food brand Fujiya
- Peko, stage name for Japanese singer Eiko Shimamiya