The 1965 Green Bay Packers season was their 45th season in the National Football League. The club posted a 10–3–1 record under coach Vince Lombardi, earning them a tie for first place in the Western Conference with the Baltimore Colts. The Packers and Colts played a one-game playoff in Green Bay, which the Packers won 13–10, in overtime. The Packers then defeated the defending champion Cleveland Browns, 23–12, in the NFL Championship Game. This marked the Packers 9th NFL World Championship, third under Lombardi, and the last NFL championship game before the advent of the Super Bowl.