The 2003–04 Detroit Pistons season was the 63rd season of the franchise, the 56th in the National Basketball Association (NBA), and the 47th in the Detroit area. After their first trip to the Conference Finals since 1991, the Pistons hired Larry Brown as head coach. Under Brown, the Pistons were once again a tough defensive team as they got off to a solid 32–16 start. However, they struggled in February losing six consecutive games. At midseason, the team acquired All-Star forward Rasheed Wallace from the Atlanta Hawks after playing just one game for them. With the addition of Wallace, the Pistons went on to finished second in the Central Division with a 54–28 record.

In the first round of the playoffs, the Pistons defeated the Milwaukee Bucks in five games despite losing Game 2 at home. In the semifinals, they faced the New Jersey Nets. The Pistons would win the first two games at home, but the Nets jumped out to a 3–2 series lead, which included a triple overtime win in Game 5. However, the Pistons managed to win the next two games to advance to the Eastern Conference Finals, where they defeated the top-seeded Indiana Pacers in six games to advanced to the NBA Finals. In the Finals, the Pistons defeated the heavily favored Los Angeles Lakers in four games to one, winning their third overall championship and first since 1990. Chauncey Billups was named Finals MVP. Following the season, Corliss Williamson was traded to the Philadelphia 76ers.

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