Surname Khwannapha (Khwannapha 
) , in the world, is an extremely rare cognomen. Much more prevalently, Khwannapha is the forename as well as the last name.
Suso, Chanlueang, Chanthaman, Phanthasu, Klangboran, Chinnarat, Chawiphak, Kaewprom, Boonvartee, Boonngam, Chaicharudat, Chankaeo, Nualsri, Treekul, Thobamrung, Junchay, Janmeta, Donkham, Kkongcharoen, Kessaro, Pukdee, Seedasorn, and Rattanadaecha