The Mongolian People's Party (MPP) is a social democratic political party in Mongolia. It was founded as a communist party in 1920 by Mongolian revolutionaries and is the oldest political party in Mongolia.
The party played an important role in the Mongolian Revolution of 1921, which was inspired by the Bolsheviks' October Revolution. The revolutionaries' victory resulted in the establishment of the socialist Mongolian People's Republic and the party becoming the sole ruling party of the country. The party changed its name to the Mongolian People's Revolutionary Party (MPRP) and joined the Communist International in 1924.