Shōichi, Shoichi or Shouichi (written: 昭一, 昇一, 正一, 昌一, 晶一, 勝一, 昇一 or 省一) is a masculine Japanese given name. Notable people with the name include:

• Shoichi Aoki (青木 正一, born 1955), Japanese photographer and editor
• Shoichi Arai (荒井 昌一, 1965–2002), Japanese professional wrestling announcer and executive
• Shoichi Funaki (船木 勝一, born 1968), Japanese professional wrestler
• Shoichi Hirose (広瀬 正一, born 1918), Japanese actor
• Shōichi Kokushi (聖一 国師, 1202-1208), Japanese Buddhist monk (also known as Enni)
• Shoichi Kondo (近藤 昭一, born 1958), Japanese politician
• Shoichi Kuwabara (born 1969), Japanese golfer
• Shoichi Masutomi (増富 省一, 1912–?), Japanese sport wrestler
• Shōichi Nakagawa (中川 昭一, 1953–2009), Japanese politician
• Shoichi Nishimura (西邑 昌一, 1912–1998), Japanese footballer and manager
• Shōichi Ozawa (小沢 昭一, 1929–2012), Japanese actor
• Shoichi Sakata (坂田 昌一, 1911–1970), Japanese academic and physicist
• Shoichi Sato (佐藤 正一, born 1947), Japanese golfer
• Nejime Shōichi (ねじめ 正一, born 1948), Japanese poet and writer
• Shōichi Ueno (上野 尚一, 1936–2016), Japanese newspaper publisher and philanthropist
• Shōichi Watanabe (渡部 昇一, born 1930), Japanese academic and writer
• Shoichi Yanagimoto (柳本 晶一, born 1951), Japanese volleyball player
• Shōichi Yokoi (横井 庄一, 1915–1997), Japanese military officer

Fictional characters

• Shinkawa Shouichi (昌一 新川), a character in the light novel series Sword Art Online
• Tsugami Shouichi (津上翔一), a character in the television series Kamen Rider Agito
• Urata Shoichi (庄一), a character in the visual novel Tennis Ace

See also

• 5922 Shouichi, a main-belt asteroid