Family name คงสุวรรณสม (คงสุวรรณสม 
, Kongsuwannasom ) , in the entire world, is a very rare last name. The surname คงสุวรรณสม is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| คงสุวรรณสม, Kongsuwannasom | Thailand |