- Dec 1 With WWII travel restrictions in mind, MLB owners decide to restrict travel to a 3-trip schedule rather than customary 4; Spring training in 1943 limited to locations north of Potomac or Ohio rivers and east of the Mississippi
- Dec 5 CFL Grey Cup, Varsity Stadium, Toronto: Toronto RCAF Hurricanes beat Winnipeg RCAF Bombers, 8-5
- Dec 8 8th Heisman Trophy Award: Frank Sinkwich, Georgia (HB)
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