Surname Jangjai (Jangjai 
) , in the world, is a rare last name. The surname Jangjai is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Very seldom, Jangjai is the forename as well as the last name.
Mukda, Saknavee, Sureerat, Khempavee, Pratheep, Pirapong, Phiranan, Jiratana, Tanatorn, Thanawat, Thawitchiran, Napaporn, Warichaya, Sahatchol, Sasiwimol, Phannarai, Jariyakorn, Soonthreekorn, Ittipol, Vachirawich, Ittipon, Jintana, Sawee, Kanya, Varit, Mookda, Sirima, Suriya, Makawat, Sanchat, Surapol, Suriyan, Supapon, Sumanop, Somchai, Addhaporn, Assanee, Rungtip, Duripat, Viparat, and Pattarathida