Cognomen Rungsiman (รังสิมันต์ 
, Rungsiman ) , across the world, is a very rare family name. The surname Rungsiman is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Predominantly, Rungsiman is the forename as well as the last name.
Sanun, Hanphaiboon, Nararatwong, Pamaranon, Chobkatanyoo, Salaniyatum, Jaisamut, Phumtong, Kunthadong, Srithong, Pitakrattanasakul, Sukdeesrisawat, Sukkawat, Jaismut, Pimolwong, Prom In, Kulpetjira, Boonwai, Ekapot, Rakkan, Sutta, Sukpravit, and Damnernnirun