Southern Maryland Roller Derby (SMRD) is a women's flat track roller derby league based in Waldorf, Maryland.

Founded in 2011, the league consists of a single team which competes against teams from other leagues, and is a member of the Women's Flat Track Derby Association (WFTDA).

[1] Southern Maryland Roller Derby was founded in 2012 by five co-founders.

[2] The league first bouted in 2014, with their first road game against Five 40 Roller Girls in May, and their first home game against Salisbury Roller Girls in July.

[3] Southern Maryland entered the WFTDA Apprentice Program in January 2015,[4] and was made a full member of the WFTDA in January 2016.