Cognomen Yutthaphong (ยุทธพงษ์ 
, ยุทธพงศ์ , Yutthaphong ) , all around the world, is a very rare family name. The last name Yutthaphong is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Much more frequently, Yutthaphong is the forename as well as the last name.
Asa, Rabuephanom, Tanthong, Nakchuai, Vipawaphinyo, Sudawannasak, Sriworasa, Changsattoo, Kheereemangkla, Promnaree, Phimphorn, Phimsrimueang, Sitthichot, Suphapanyaphong, Sriworawong, Dechakhoop, Thipkrongrat, Thonsoongnoen, Chaiwinitcharoen, Chiamchitrak, Phattarakup, Wongmuangsan, Phonchan, Khambubpha, Kaeothai, Chetmanorom, Onso, Samon, Posae, Phumi, Tikun, Bunchu, Teerew, Nekhom, Buncham, Kamsopha, Phutthiphonsothon, Kaewsuk, Khanyod, Panyada, Polkhet, Phiabuttawong, Phungam, Thiprat, Saiduang, Suphawit, Chaipong, Chatkulkawin, Kaewood, and Thawiaphiradiphanit