Last name รุจิพันธุ์ (รุจิพันธุ์ 
, Rujiphun , Ruchiphan ) , all over the world, is a very rare surname. The cognomen รุจิพันธุ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, รุจิพันธุ์ is the forename as well as the last name.