Family name กุศลพันธ์ (Kusonphan 
, กุศลพันธ์ , Charityonphan ) , all over the world, is a very rare cognomen. The last name กุศลพันธ์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, กุศลพันธ์ is the forename as well as the last name.