The Rose City Rollers is a women's flat track roller derby league based in Portland, Oregon, operating as a 501(c)3 non-profit organization, and is a founding member of the Women's Flat Track Derby Association (WFTDA). Established in 2004, the Rose City Rollers consists of a recreational program, four adult local home teams, and two all-star travel teams that represent the league in competition with others as well as junior skaters on six home teams with a travel team for Rose Petals (7–12) and a travel team for Rosebuds (12–17). Rose City's all-star travel team "Wheels of Justice" won the WFTDA Championships in 2015, 2016, 2018 and 2019.

The International Women's Flat Track Derby Association Championships are the leading competition for roller derby leagues.