Cognomen Saitu (Saitu 
) , around the world, is a rare surname. The last name Saitu is habitual in Tajikistan, where it is quite a rare surname, Kenya, where it is a rare surname, and Argentina, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Kenya, Tajikistan, and Brazil. Also, Saitu is the forename as well as the last name.