Xong is of Vietnamese origin, derived from the Vietnamese word 'xong,' which means 'finished' or 'completed.' It is often used as a given name and can also serve as a family name in Vietnam. Xong is pronounced /ˈsɔŋ/.
The number of births named Xong peaked in 1982 with six babies sharing the name that year. The years before and after saw five births each, resulting in a total of sixteen babies being given the name Xong between 1981 and 1983.