Chong, or more specifically Western Chong (also spelled Chawng, Shong, Xong), is an endangered language spoken in Cambodia and southeastern Thailand. It is a Western Pearic language in the Mon–Khmer language family. Chong is currently the focus of a language revitalization project in Thailand.The Chong language is marked by its unusual 4-way contrast in register. Its grammar has not been extensively studied, but it is unrelated to the Thai language which is in the Tai–Kadai language family.