Saidu is a given name and surname. Notable people with the name include:
Given name Saidu Musa Abdullahi (born 1979), Nigerian politician Saidu Adeshina (born 1983), Nigerian footballer Saidu Baba (1794–1877), Emir of Swat Saidu Ayodele Balogun (born 20 April 1941), Nigerian general and politician Saidu Barda, Nigerian politician Saidu Dansadau (born 1953), Nigerian politician Saidu Fofanah (born 1997), Sierra Leonean footballer Saidu Bah Kamara (born 2002), Sierra Leonean footballer Saidu Kargbo (born 1982), Sierra Leonean boxer Saidu Kumo (1959–2020), Nigerian politician Saidu Mansaray (born 2001), Sierra Leonean footballer Saidu Namaska (1937–2021), Nigerian ruler of the Kontagora Emirate Saidu Samaila Sambawa, Nigerian politician
Surname Dominic Saidu (born 1950), Liberian sprinter Suleiman Saidu (born 1938), Nigerian Navy Rear Admiral