Cognomen Thungngoen (Thungngoen 
) , in all the world, is a rare surname. The surname Thungngoen is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, Thungngoen is the forename as well as the last name.
Kannika, Jiranan, Sineeporn, Sutatinee, Chatthep, Porntipa, Veerinrada, Chiraphon, Kanokporn, Chompunoot, and Praphaphan