Surname Khwanruan (Khwanruan 
) , in the world, is an extremely rare family name. The cognomen Khwanruan is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more frequently, Khwanruan is the forename as well as the last name.
Eakun, Panthong, Pholyiam, Wongriya, Supunchai, Srisuthum, Kongsumree, Promjunteuk, Phuangket, Nontasawad, Viriyasavet, Maneechark, Muensuksang, Sutthiarporn, Ruangmontree, Wichaiwong, Khumphet, Boonkham, Chomyong, Sritechisaranont, Soubol, Chalee, Pannim, Phoong, Laloei, Nobnob, Malison, Wongtipparat, Sangjan, Srithip, Sridang, Chuapkrathok, Kangtin, Puakphromma, Janloynapa, Tapaothong, Singlor, and Jongprasert