Mapletown is an unincorporated community and census-designated place in Monongahela Township, Pennsylvania, United States. It is located west of the Monongahela River in southeastern Greene County. As of the 2010 census, the population was 130.
Mapletown is named for Robert "Bob" Mapel, who was also the founder of Bobtown, Pennsylvania.
Mapletown is served by Southeastern Greene School District and is the location of Mapletown Junior/Senior High School.