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
• Michio Ariyoshi (有吉 道夫, born 1935), Japanese shogi player
• Saori Ariyoshi (有吉 佐織, born 1987), Japanese footballer
• Sawako Ariyoshi (有吉 佐和子, 1931–1984), Japanese writer