Cognomen ซูม (Sum 
, ซูม 
, Zoomo) , throughout the world, is a common surname. The family name ซูม 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 is the most numerous in Malaysia, Hong Kong, and Indonesia. Also, ซูม is the forename as well as the last name.