Cognomen Benchawan (เบญจวรรณ 
, เบ็ญจวรรณ , Benchawan 
) , in the entire world, is a rare surname. The cognomen Benchawan is habitual in Thailand, where it is quite a rare surname, Malaysia, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much more prevalently, Benchawan is the forename as well as the last name.
Kayao, Ngaosing, Sanitmatcharo, Saisawart, Saengphet, Suphanangthong, Chitmanee, Boonrueng, Ratchasee, Jansamart, Tananchai, Thungsibsee, Tirasathit, Nakhammun, Hiransing, Channarong, Kamchantuke, Pinthusopon, Thummasombut, Nanthachai, Yingcharoen, Charnchanarot, Tawinsang, Ponjarat, Promchan, Kruanate, Sripai, Karama, Kamgean, Phanta, Jitsue, Muangyu, Khunadoi, Pengnoo, Thabpoe, Norkaew, Patchakapati, Nonwannawong, Ouivirat, Shewaosot, Sucharee, Soiprasit, Chanasuwan, Boonkuea, Boonhuad, Bungthong, Kaviroon, Krataithong, Heempong, and Preechasiripan