Cognomen Prathom (ปฐม 
, ประถม , Prathom 
) , in all the world, is a rare family name. The last name Prathom is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. More frequently, Prathom is the forename as well as the last name.
Leah, Kamolrat, Kaewmoungchai, Krangkalo, Ratsamee, Rojwanachai, Goollaboot, Jumpakhum, Thongpor, Nansatit, Eakarath, Hongcome, Musikarak, Ariyamatepreecha, Kaewchoofong, Kaeomanee, Kongsuwan, Promsuwan, Thammasek, Sinthuchai, Suksiriboon, Thaithumyanon, Kamonrat, Boonnoon, Chaichit, Silpprasith, Tang, Manmoh, Bundit, Kitrop, Pandee, Paopas, Nothao, Homket, Hodboonruang, Muensri, Booncharoen, Suwanno, Chuemor, Boondam, Bunwong, Kaeochufong, Panlean, Rittropast, Nichawong, Moondaeng, Sangdouen, Silaphet, Chanhom, and Siriwongwanngarm