Fairmount (sometimes written as Fairmount Avenue) is a regional rail station on the MBTA Commuter Rail Fairmount Line, located in the Hyde Park section of Boston, Massachusetts, under the Fairmount Avenue overpass. It is the last stop outbound on the Fairmount Line before it joins the Franklin Line at Readville. Fairmount station opened in 1979 during Southwest Corridor reconstruction; intended to be temporary, it eventually became a permanent stop.