The Phoenix Mercury are an American professional basketball team based in Phoenix, Arizona, playing in the Western Conference in the Women's National Basketball Association (WNBA). The team was founded before the league's inaugural 1997 season began; it is one of the eight original franchises. The team is owned by Robert Sarver, who also owns the NBA team Phoenix Suns.

The Mercury has qualified for the WNBA Playoffs in fifteen of its twenty-four years in Phoenix. The franchise has been home to players such as former UConn Diana Taurasi, Rutgers grad Cappie Pondexter, former Temple power forward Candice Dupree, former Baylor center Brittney Griner, and Australian guard Penny Taylor. In 1998, 2007, 2009, and 2014, the Mercury went to the WNBA Finals; they lost to Houston in 1998, but won the title in 2007, 2009, and 2014 over Detroit, Indiana, and Chicago respectively.