Sibeko is a surname. Notable people with the surname include:
Archibald "Archie" Mncedisi Sibeko (1928–2018), South African political activist and trade unionist David Sibeko (1938–1979), South Africa politician and journalist Gerald Sibeko (born 1979), South African footballer Letitia Sibeko (1930–?), South African political activist, wife of Archie