Kuniyoshi (written: 国吉 or 國吉) is a Japanese surname. Notable people with the surname include:

• Fumio Kuniyoshi (国吉 史生, born 1985), Japanese-German rapper
• Takahiro Kuniyoshi (國吉 貴博, born 1988), Japanese footballer
• Yasuo Kuniyoshi (国吉 康雄, 1893–1953), American painter and photographer
• Yuki Kuniyoshi (国吉 佑樹, born 1991), Japanese baseball player

Kuniyoshi (written: 邦嘉, 邦佳, 邦栄, 國義 or 國芳) is also a masculine Japanese given name. Notable people with the name include:

• Kuniyoshi Hironaka (弘中 邦佳, born 1976), Japanese mixed martial artist
• Kuniyoshi Kaneko (金子 國義, 1936–2015), Japanese painter, illustrator and photographer
• Kuniyoshi Obara (小原 國芳, 1887–1977), Japanese educational theorist and publisher
• Kuniyoshi Sakai (酒井 邦嘉), Japanese scientist
• Tamura Kuniyoshi (田村 邦栄, 1852–1887), Japanese daimyō
• Utagawa Kuniyoshi (歌川 國芳, 1797–1861), Japanese artist in woodblock printing and painting
• Prince Kuni Kuniyoshi (1873–1929), member of the Japanese imperial family and field marshal in the Imperial Japanese Army