Ariyoshi (written: 有吉) is a Japanese surname. Notable people with the surname include:
Chūichi Ariyoshi (有吉 忠一, 1873–1947), Japanese politician
George Ariyoshi (有吉 良一, born 1926), American politician
Hiroiki Ariyoshi (有吉 弘行, born 1974), Japanese comedian
Koji Ariyoshi (有吉 幸治, 1914–1976), American labor unionist and activist
Kyōko Ariyoshi (有吉 京子, born 1950), Japanese manga artist
Saori Ariyoshi (有吉 佐織, born 1987), Japanese footballer
Sawako Ariyoshi (有吉 佐和子, 1931–1984), Japanese writer