Cognomen ทองเกษ (ทองเกษ 
, Thongket 
) , all around the world, is a rare last name. The family name ทองเกษ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname, and Malaysia, where it is an extremely rare surname. Much less frequently, ทองเกษ is the forename as well as the last name.