Surname Thongruk (Thongruk 
) , in the world, is a rare cognomen. The family name Thongruk is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, Thongruk is the forename as well as the last name.
Ruk, Sasikanya, Siripong, Sittikan, Sittigan, Boonniti, Butsakorn, Tanyaluk, Tawangron, Thirapol, Watsamon, Monthakan, Bhuriwatt, Khanittha, Duangporn, Thitigorn, Napatphon, Ruttanawadee, Rawadee, Doungkamol, Puntipa, Chalita, Bodee, Kalya, Pikul, Jitra, Suriya, Somyot, Thanwa, Natima, Nitcha, Orawan, Maliwan, Mailwan, Mongkol, Sathorn, Sirirat, Suwimon, Somnuen, Pramual, and Thanyathorn