Obata (written: 小畑, 小幡, 小畠 or 小圃) is a Japanese surname. Notable people with the surname include:
Chiura Obata (1885–1975), Japanese-American artist
Gyo Obata (born 1923), American architect
Hideyoshi Obata (1890–1944), general in the Imperial Japanese Army in World War II
Isao Obata (1904–1976), Japanese karate master
Jumpei Obata, Japanese football player
Kayoko Obata (born 1971), Japanese long-distance runner
Kunihiko Obata (born 1980), retired amateur Japanese freestyle wrestler
Obata Kagenori (1572–1663), Confucian scholar and samurai
Obata Masamori (1534–1582), Japanese samurai warrior
Obata Toramori (1491–1561), Japanese samurai warrior of the Sengoku Period
Reiko Obata, Japanese-American koto performer and composer
Saori Obata (born 1978), Japanese tennis player
Takeshi Obata (born 1969), Japanese manga artist
