Sōichi, Soichi, Souichi or Sohichi (written: 壮一, 宗一, 聡一, 奏一 or そういち in hiragana) is a masculine Japanese given name. Notable people with the name include:
* (born 1942), Japanese politician
* (born 1972), Japanese baseball player
*
Soichi Ichida
Dr. Soichi Ichida (30 December 1910 – 30 June 1986) was a distinguished Japanese philatelist who specialized in studies of classic Japanese postage stamps and encouraged the collecting of Japanese stamps and Japanese postal history throughout t ...
(1910–1986), Japanese philatelist
* (1886–1947), Japanese mathematician
*, Japanese manga artist
* (born 1965), Japanese astronaut
* (1900–1970), Japanese journalist
* (1885-1971), Japanese-American photographer
* (born 1989), Japanese footballer
* (born 1965), Japanese composer
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Japanese masculine given names