Bishop McNamara competes in the
Washington Catholic Athletic Conference at the Varsity and Junior Varsity levels in the following sports: Fall - Football, Women's Tennis, Volleyball, Cross Country, Women's Soccer, Men's Soccer, and Cheerleading Winter - Men's Basketball, Women's Basketball, Swimming, Wrestling, Cheerleading, and Indoor Track Spring - Baseball, Softball, Men's Tennis, Men's Lacrosse, Women's Lacrosse, Track & Field, and Golf Each year student-athletes are selected to the WCAC All-Conference teams,
Washington Post All-Met Teams, Maryland All-State Teams, MSABC All State Team, as well as other national, state and conference awards. In 2013, thirteen student-athletes signed with Division 1 colleges and universities, such as the University of Maryland College Park, Georgia Tech, Fordham University, VCU, UMBC, Sienna College, University of Toledo, Columbia University, University of Tennessee, and George Mason University. Bishop McNamara's women's basketball team has established itself as one of the premier teams in not only the Washington Catholic Athletic Conference (WCAC) but the entire nation as well. In 2005, the team was ranked #1 by
USA Today, and the team finished with only one loss in the WCAC semifinals. In the 2007-2008, 2019-2020, and 2024-2025 seasons, the Lady Mustangs became WCAC champions. ==Notable alumni==