Globally, 堅 (Caan 
, 堅 
) is quite a rare masculine first name. The forename 堅 is habitual in India, where it is a very rare boy's name, China, where it is an extremely rare boy's name, and the United States, where it is an extremely rare principally male, but very seldom feminine name. More prevalently, 堅 is the last name as well as the forename.