Union Grove Schoolhouse is a historic one-room school building in Dickens, Allegany County, Maryland.

It is a one-story frame building, rectangular in plan, containing a single classroom and an entrance vestibule.

It is the last remaining one-room schoolhouse on its original site and in unaltered condition in Allegany County.

[2] It was listed on the National Register of Historic Places in 1979.

This article about a Registered Historic Place in Allegany County, Maryland is a stub.