Brøndby IF (Danish pronunciation: ) is a Danish football club based in Brøndbyvester, Brøndby, on the western outskirts of Copenhagen.The club is also known as Brøndbyernes Idrætsforening, or Brøndby and BIF for short. The club was founded in 1964 as a merger between two local clubs and was promoted to the Danish top-flight football league in 1981.