Family name สัจจพันธุ์ (สัจจพันธุ์ 
, Satjaphan , Sajjaphan ) , all over the world, is a very rare cognomen. The cognomen สัจจพันธุ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, สัจจพันธุ์ is the forename as well as the last name.