Okah is a surname. Notable people with the surname include:
Adaobi Okah (), Nigerian footballer Charles Okah (), Nigerian terrorist, brother of Henry Okah Emmanuel Okah (), Nigerian lawyer and politician Henry Okah (born 1965), Nigerian presumed guerrilla leader, brother of Charles Okah Julie Okah-Donli (born 1966), Nigerian lawyer, chartered secretary and administrator, Director General of the National Agency for the Prohibition of Trafficking in Persons