Family name กิจสัมฤทธิ์ (กิจสัมฤทธิ์ 
, Kijsamrit , Kijsumritroj ) , throughout the world, is a very rare surname. The surname กิจสัมฤทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, กิจสัมฤทธิ์ is the forename as well as the last name.