Deguchi (written 出口 lit. "exit") is a Japanese surname. Notable people with the surname include:
, Japanese singer and idol Christa Deguchi (出口 クリスタ, born 1995) is a Canadian judoka. , Japanese golfer , Japanese sport wrestler , Japanese voice actress , Japanese religious leader and founder of Oomoto , Japanese model and actress , Japanese religious leader Tetsujyo Deguchi (born 1950), Japanese Zen Buddhist , Japanese baseball player