Family name Kwangthong (Kwangthong 
) , all around the world, is a rare surname. The surname Kwangthong is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname.
Metha, Chatcharin, Nuttawoot, Nalinthip, Nattapong, Preeyanan, Sutthisuk, Norathep, Natvalan, Natthicha, Teerasak, Thamanoon, Khunanya, Kanokwan, Sivakrit, Waricha, Wannisa, Jutiporn, Pornsun, Sukanda, Surasee, Nithut, Lerdej, Ruedirat, Narin, Phong, Chatchavarl, and Rattanaporn