Last name Sa-Ngiam (เสงียม 
, Sa-Ngiam 
) , in the entire world, is a rare family name. The cognomen Sa-Ngiam is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Predominantly, Sa-Ngiam is the forename as well as the last name. Parts of the name also exists independently as a last name Sa, and a last name Ngiam.