Mogzon () is an urban locality (an urban-type settlement) in the eastern part of Khiloksky District of Zabaykalsky Krai, Russia, located at the confluence of the Khila and Khilok Rivers. Population:
Mogzonsky (Khilinsky) Arshan springs have been known to exist in this are since the end of the 19th century. A Buryat ulus of Mokzon () was located in the vicinity. In 1895, a railway station at Arshan () was established. It was later moved to the area of modern Mogzon and given its present name. In 1938, it was granted urban-type settlement status.
Mogzon's population growth and industrial development was and is tied to railway infrastructure. Mogzon is a railway station of the Trans-Siberian Railway.
There is the museum of Mogzon's history founded in 1988.