Family name ชลฤทธิ์ (Chontarit 
, Chonlarit , ชลฤทธิ์ ) , throughout the world, is a very rare last name. The family name ชลฤทธิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, ชลฤทธิ์ is the forename as well as the last name.