Family name Lumthong (Lumthong 
) , across the world, is a very rare surname. The surname Lumthong is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, Lumthong is the forename as well as the last name.
Ploy, Sanya, Sombat, Patikon, Jetsada, Kamonrat, Valongkorn, Waranyoo, Nutchanon, Ruethairat, and Chalermchai