Cognomen Wiratkasem (Wiratkasem 
) , all over the world, is a rare last name. The cognomen Wiratkasem is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname, and Malaysia, where it is an extremely rare surname.
Oum, Punyawut, Jittaporn, Thanapat, Natdanai, Nawaporn, Amnuayporn, Piyachat, Chompunut, Kengkamon, Tawatchai, Nuchanart, Warinphorn, Wipawadee, Papatsapon, Kamolnutt, Wichayanan, Podjanin, Kanyarat, Poom, Amara, Jinda, Ammara, Nouknuea, Others, Khaenapha, Krisana, Prasoet, Darapon, Woraree, Woraluck, Yodpornpin, Maneewan, Pawinee, and Wachiraphorn