The Mary Greenhaw Memorial Methodist Episcopal Church South is a historic church at 115 East Nome Street in Marshall, Arkansas. It is a single-story stone structure, in a vernacular interpretation of the Gothic Revival style. Its windows are simplified versions of lancet-arch Gothic windows, and the tower has a steeply pitched pyramidal roof above an open belfry. The church was built c. 1900 for a congregation established about 1871. Its building is named after a member of the locally prominent Greenhaw family.
The church was listed on the National Register of Historic Places in 2012.