Cognomen 斯曼 (Siman 
, 斯曼 
) , in the entire world, is a common surname. The cognomen 斯曼 is characteristic of Malaysia, where it is quite a common surname, Cyprus, and El Salvador. Not in comparison with a country's population, the name is most common in South-eastern Asia, particularly Indonesia, Malaysia, and Philippines. Also, 斯曼 is the forename as well as the last name.