In the world, Sitja (Sitja 
, Sitte 
) is a rare mostly feminine, but infrequently boy's first name. The forename Sitja is habitual in Philippines, where it is a rare feminine name, Saudi Arabia, and Turkey, where it is a very rare feminine name. In absolute terms, it is commonest in Philippines, India, and Turkey. More prevalently, Sitja is the last name as well as the forename.