Mountain Pine is a city in Garland County, Arkansas, United States. It is part of the Hot Springs Metropolitan Statistical Area. The population was 770 at the 2010 United States census. 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 (including City Hall, a bank, a post office and a store), Cozy Acres (southwest) and the Mountain View/Timberland area.