Family name Khongkwan (Khongkwan 
) , in the entire world, is a very rare surname. The last name Khongkwan is habitual in Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. More prevalently, Khongkwan is the forename as well as the last name.
Saetong, Panichayanon, Chaimongkol, Trakoolporn, Chaipurimas, Taduangkaew, Janpongsri, Leepraphawattana, Leeprapawattana, Kwankamon, Witchuta, Tribanjobpong, Thongkom, Leepaphawattana, Supapong, Tesakan, Petkhajon, Kullawut, Kanhale, Sukarom, Chinwattanakul, and Chompoochart