Family name Kongngen (Kongngen 
) , worldwide, is a very rare last name. The last name Kongngen is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, Kongngen is the forename as well as the last name.
Wichai, Sujinna, Chalouy, Nirawan, Boonchom, Pinyapat, Nichchawan, and Atcharaporn