Abell House is a historic home located at Leonardtown, St. Mary's County, Maryland, United States. It was constructed about 1910 and is a two-story, three bay frame dwelling. The house commands sweeping views of Breton Bay, a sheltered harbor of the Potomac River. It exhibits a vernacular interpretation of the Queen Anne. It was built by Enoch B. Abell, a significant local political leader, attorney, and entrepreneur, who resided there until his death in December 1924. Abell House was listed on the National Register of Historic Places in 2003.