The Chicago Bears are a professional American football team based in Chicago. The Bears compete in the National Football League (NFL) as a member of the National Football Conference (NFC) North division. The Bears have won nine NFL Championships, eight prior to the AFL–NFL merger and one Super Bowl. They also hold the NFL records for the most enshrinees in the Pro Football Hall of Fame and the most retired jersey numbers. The Bears' NFL championships and overall victories are second behind the Green Bay Packers, with whom they have a long-standing rivalry.

The franchise was founded in Decatur, Illinois, on September 20, 1919, became professional on September 17, 1920, and moved to Chicago in 1921. It is one of two remaining franchises from the NFL found in 1920, along with the Arizona Cardinals, which started in Chicago. The team played home games at Wrigley Field on Chicago's North Side through the 1970 season; playing since then at Soldier Field on the Near South Side, adjacent to Lake Michigan.

The team headquarters, Halas Hall, is in the Chicago suburb of Lake Forest, Illinois. The Bears practice at adjoining facilities there during the season, and began hosting training camp at Halas Hall in 2020 after major renovations.