The Chicago Bulls are an American professional basketball team based in Chicago, Illinois. The Bulls compete in the National Basketball Association (NBA) as a member of the league's Eastern Conference Central Division. The team was founded on January 16, 1966 and played its first game later that year. The Bulls play their home games at the United Center, an arena on Chicago's west side shared with the Chicago Blackhawks of the National Hockey League (NHL).

The Bulls saw their greatest success during the 1990s when they played a major part in popularizing the NBA worldwide. They are known for having one of the NBA's greatest dynasties, winning six NBA championships between 1991 and 1998 with two three-peats. All six of their championship teams were led by Hall of Famers Michael Jordan, Scottie Pippen and coach Phil Jackson. The Bulls are the only NBA franchise to win multiple championships while never losing an NBA Finals series in their history.

The Bulls won 72 games during the 1995–96 NBA season, setting an NBA record that stood until the Golden State Warriors won 73 games during the 2015–16 NBA season. The Bulls were the first team in NBA history to win 70 games or more in a single season, and the only NBA franchise to do so until the 2015–16 Warriors.

Michael Jordan and Derrick Rose have both won the NBA Most Valuable Player Award while playing for the Bulls, for a total of six MVP awards.

The Bulls share rivalries with the Cleveland Cavaliers, Detroit Pistons, Miami Heat and the New York Knicks. The Bulls' rivalry with the Pistons was highlighted heavily during the late 1980s and early 1990s.