- Dec 1 27th Iron Bowl: Alabama beats Auburn 38-0 in Birmingham, their fourth straight shutout in the series
- Dec 1 Classifications in minor league baseball are overhauled; Eastern and South Atlantic leagues are promoted from Class-A to Class-AA; classes B, C and D are abolished with those leagues being promoted to Class-A
- Dec 2 50th Grey Cup, Exhibition Stadium, Toronto: Winnipeg Blue Bombers edge Hamilton Tiger-Cats, 28-27; play starts 1 December; only final ever suspended during play (fog), and first to be finished on a Sunday
- Dec 3 1963 NFL Draft: Terry Baker from Oregon State first pick by Los Angeles Rams
- Dec 16 NY Giant Y. A. Tittle sets NFL season touchdown pass record at 33 with 6 touchdowns vs Dallas (41-31)
- Dec 18 Ballon d'Or: Dukler Prague midfielder Josef Masopust wins award for best European football player; beats Benfica striker Eusébio and FC Köln defender Karl-Heinz Schnellinger
- Dec 22 1,000,000th NBA point scored
- Dec 27 28th Heisman Trophy Award: Terry Baker, Oregon State (QB)
- Dec 28 51st Davis Cup: Australia beats Mexico in Brisbane (5-0)
- Dec 29 Australian cricket batting champion Doug Walters makes 1st-class debut for NSW v Queensland in Sydney at just 17 years, 8 days; scores 50 in NSW 2nd innings
Hill F1 Champion
Dec 29 British driver Graham Hill wins the South African Grand Prix at Prince George Circuit in a BRM; takes out his first F1 World Drivers Championship by 12 points from Scotsman Jim Clark
Packers Defeat Giants
Dec 30 National Football League Championship, Yankee Stadium, NYC: Green Bay Packers beat NY Giants, 16-7; MVP: Ray Nitschke, Green Bay, LB
- Dec 31 American Basketball League announces suspension of operation
Baseball Players
Basketball Stars
Boxers
Footballers
NFL Stars
Tennis Champions