Cognomen 天 (天 
, Tian 
, Tien ) , around the world, is a prevalent family name. The last name 天 is habitual in China, where it is a common surname, Malaysia, and Cayman Islands, where it is quite a common surname (explore the name in all countries). In absolute terms, it most frequently occurs in China, Malaysia, and Indonesia. Very seldom, 天 is the forename as well as the last name.