Mountain Pine is a city in Garland County, Arkansas, United States. It is part of the Hot Springs Metropolitan Statistical Area. As of the 2020 census, Mountain Pine had a population of 585. It is located immediately southeast of Lake Ouachita below the Blakely Mountain Dam. The city consists of five defined neighborhoods: Pinewood (north), South Mountain Pine, a business district, Cozy Acres (southwest) and the Mountain View/Timberland area.