Family name Somboonruj (Somboonruj 
) , across the world, is a very rare last name. The cognomen Somboonruj is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
Pimvara, Jirapat, Nitiroj, Nopanan, Jirapipat, Tharnist, Papatwarin, and Jiratchaya