Tosaka (written: 登坂 or 戸坂) is a Japanese surname. Notable people with the surname include:

  • Eri Tosaka (登坂 絵莉, born 1993), Japanese sport wrestler
  • Hiroomi Tosaka (登坂 広臣, born 1987), Japanese singer and actor
  • Jun Tosaka (戸坂 潤, 1900–1945), Japanese philosopher

See also

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