- Dec 1 CFL Grey Cup, Varsity Stadium, Toronto: Toronto Argonauts win their 6th title with a 35-0 shutout of the Winnipeg Blue Bombers
- Dec 4 11th Heisman Trophy Award: Doc Blanchard, Army (FB)
- Dec 4 Senate approves US participation in United Nations
- Dec 5 Dutch Special Council of Annulment affirms death sentence of radio presenter Max Blokzijl for broadcasting Nazi propaganda
- Dec 5 Flight 19 the "Lost Squadron" of 5 torpedo bombers and 14 airmen is lost east of Florida in the supposed Bermuda Triangle
- Dec 10 Aust Services lose 3rd Victory Test Cricket to India by 6 wkts
- Dec 10 Preston Tucker reveals plan to produce the Torpedo, a new 150 MPH car
- Dec 11 Het Parool publishes 1st Captain Rob-strip
- Dec 12 Special Court of justice convicts Dutch Nazi leader Mussert to death
Dream Girl
Dec 14 Elmer Rice's play "Dream Girl" premieres in NYC
- Dec 15 John J "Cardinal" O'Connor, ordained as a priest
- Dec 16 National Football League Championship, Cleveland Stadium: Cleveland Rams beat Washington Redskins, 15-14; last game before Rams move west to Los Angeles
- Dec 18 Uruguay joins the United Nations
- Dec 19 Austrian Republic re-establishes
- Dec 19 Jean Giraudoux' "La Folle de Chaillot" premieres in Paris
- Dec 20 Rationing of auto tires ends in US
- Dec 21 "Billion Dollar Baby" opens at Alvin Theater NYC for 219 performances
- Dec 22 Utrecht: Catholic People's party (KVP) established
International Monetary Fund
Dec 27 International Monetary Fund formally established by 29 member countries based on ideas of Harry Dexter White and John Maynard Keynes
- Dec 27 The World Bank was created with the signing of an agreement by 28 nations.
- Dec 28 Congress officially recognizes "Pledge of Allegiance"
Maurice Richards Fastest to 100
Dec 29 Montreal right wing Maurice Richard scores twice in Canadiens' 5-4 loss to Chicago Black Hawks to record his 100th NHL career goal; reaches mark in 145 games, then fastest in history; since broken by Mike Bossy, 100 goals in 129 games
Bradman's 1st Post-war Century
Dec 31 Before the biggest Adelaide Oval crowd of the season, batting maestro Don Bradman scores his first post-WWII century; 112 for South Australia v Australian Services
United Nations Charter
Dec 31 Ratification of United Nations Charter completed
Authors
Civil Rights Activists
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