Family name 君主 (Tittu 
, 君主 
) , all around the world, is a rare last name. The last name 君主 is habitual in Tanzania, where it is a very rare surname, Malaysia, where it is an extremely rare surname, and India. In absolute terms, the name is most common in India, China, and Tanzania. More frequently, 君主 is the forename as well as the last name.