Surname Rongroj (Rongroj 
) , across the world, is an extremely rare cognomen. The cognomen Rongroj is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, Rongroj is the forename as well as the last name.
Pansa, Saithong, Sirithai, Kongamnueysak, Thongpaen, and Tangthanakul