The Washington Mystics are an American professional basketball team based in Washington, D.C. The Mystics compete in the Women's National Basketball Association (WNBA) as a member club of the league's Eastern Conference. The team was founded prior to the 1998 season, and is owned by Ted Leonsis through Monumental Sports & Entertainment, which also owns the Mystics' NBA counterpart, the Washington Wizards. The team plays in the Entertainment and Sports Arena in the Congress Heights neighborhood of Washington DC. Sheila C. Johnson, co-founder of BET and ex-wife of Charlotte Sting owner Robert L. Johnson, is the managing partner.

The Women's National Basketball Association (WNBA) is the premier women's professional basketball league. It is composed of 12 teams, all based in the United States. The league was founded on April 22, 1996, as the women's counterpart to the National Basketball Association (NBA), and league play started in 1997. The regular season is played from May to September, with the All Star game being played midway through the season in July and the WNBA Finals at the end of September until the beginning of October.