| Date | Event |
|---|---|
| December 02 1939 | New York City's LaGuardia Airport Opens |
| December 04 1939 | HMS Nelson Is Struck By A Mine |
| December 12 1939 | Tolvajarvi: Finns Defeat Soviets |
| December 12 1939 | 124 Die In Scotland Shipwreck |
| December 13 1939 | River Plate Battle. Hans And Graf |
| December 14 1939 | USSR Expelled From League Of Nations |
| December 15 1939 | Atlanta Premiere Of Gone With The Wind |
| December 17 1939 | Graf Spee Is Scuttled Near Montevideo |
| December 18 1939 | Heligoland Bight Marks First WWII Air Battle |
| December 22 1939 | Indian National Congress Resigned Over WW II |
| December 24 1939 | Piux XII Makes Christmas Peace Appeal |
| December 27 1939 | Erzincan, Turkey Quake Kills 30,000 |
| December 27 1939 | Finland Holds Off Soviet Attack |
| December 29 1939 | Consolidated B24 Liberator Flight |