Hard Knox Roller Girls (HKRG) are a women's flat-track roller derby league based in Knoxville, Tennessee. It was founded in 2006. HKRG is a member of the Women's Flat Track Derby Association (WFTDA), and is currently in Division III. HKRG is a 501(c)3 non-profit organization that is skater owned and operated, and a portion of all proceeds from each bout is donated to charity. The Knoxville Civic Coliseum is home to the HKRG, and is sponsored by a number of local businesses.