Cognomen Rungkarn (Rungkarn 
, รุ่งกานต์, รุ่งกาญจน์) , in the entire world, is an extremely rare family name. The last name Rungkarn is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Predominantly, Rungkarn is the forename as well as the last name.
Sutti, Pinyopap, Phumsatan, Plemmons, Ronnahongsa, Duangsuk, Lepanasuwan, Thongsem, Timthong, Maneechai, Sangkaruk, Saingdang, Atthasisth, Rojanawutnont, Duangthip, Suntronsima, Srisakolkan, Boonyanuwat, Kaewpradab, Pasuntavirogh, Pratipnatsiri, Chantrangkul, Poothong, Panthong, Khatpanya, Kongmoon, Naake, Wutti, Bamrah, Pandit, Petluan, Meekaew, Somboon, Somluan, Srisura, Burarak, Watcharapreeda, Paisrirat, Jaiwonya, Nasomnuk, Hangsuwan, Wattana, Sungthavorn, Suebsing, Chanvigyakit, Katepech, Katepetch, Kachaanan, Rakkulchon, and Rattanadiloknaphuket