Seto (瀬戸; lit:strait) is the name of Japanese several places.

1. Seto, Ehime, faces the Seto Inland Sea.
2. Seto, Okayama, adjacent to Okayama City.
3. Seto, Aichi, production place of pottery and venue of Expo 2005.

Seto (瀬人) can also refer to Seto Kaiba, a character in the Yu-Gi-Oh! anime and manga series.