Oumarou is a surname. Notable people with the surname include:
Aboubakar Oumarou (born 1987), Cameroonian football player Bah Oumarou Sanda, Cameroonian diplomat Ide Oumarou (1937–2002), Nigerian diplomat and politician Karim Oumarou, Nigerien football player Mamane Oumarou (born 1946), Nigerian politician Sanda Bouba Oumarou (born 1958), Central African basketball player Sanda Oumarou (1982–2021), Cameroonian football player Seyni Oumarou (born 1951), Nigerien politician