Cognomen ซุ่ม (Sum 
, Amb 
, Ambas 
) , throughout the world, is a common family name. The last name ซุ่ม is habitual in Hong Kong, where it is quite a common surname, Malaysia, and Singapore (explore the name in all countries). Not in comparison with a country's population, it most frequently occurs in Malaysia, Hong Kong, and Indonesia. Likewise, ซุ่ม is the forename as well as the last name.