Seto may refer to:

• Seto (瀬戸; lit: strait) is the name of several places in Japan:
  • Seto, Aichi, production place of Japanese pottery and venue of Expo 2005
  • Seto, Ehime, faces the Seto Inland Sea
  • Seto, Okayama, adjacent to Okayama, in Okayama Prefecture

• Seto Inland Sea of Japan
• Sunrise Izumo/Sunrise Seto, a train in Japan

• Seto language (or Setu), a dialect spoken by the Setos, an ethnic and linguistic minority in south-eastern Estonia and north-western Russia

• Seto, a surname found most often in Japan
  • Andy Seto, a manhua artist and adapter
  • Asaka Seto, actress
  • Ichitaka Seto, a fictional character in I"s
  • Yutaka Seto, a fictional character in Battle Royale
  • Mipo Seto, an artist and 24 hour mom!
• Seto, a Japanese given name, almost always fictional
  • Seto Kaiba, a main character from the Japanese manga and anime series Yu-Gi-Oh!
  • Seto Kamiki, a character from the Japanese anime Tenchi Muyo!
  • Seto, a fictional character from the Squaresoft role-playing game Final Fantasy VII
• Seto no Hanayome, a manga and anime series

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