- Dec 1 2nd Heisman Trophy Award: Larry Kelley, Yale (E)
- Dec 1 Bell Labs tests coaxial cable for TV use
- Dec 1 Ernest Brundin & Frank Lyon obtain US patent for hydroponic (soil-less) culture of plants
- Dec 5 Armenian SSR, Azerbaijan SSR, Georgian SSR, Kazakh SSR & Kirghiz SSR becomes constituent republics of Soviet Union
- Dec 5 CFL Grey Cup, Varsity Stadium, Toronto: Sarnia Imperials defeat Ottawa Rough Riders, 26-20 for their 2nd Championship
- Dec 8 Anastasio Somoza García elected President of Nicaragua
- Dec 8 NAACP files suit to equalize salaries of black & white teachers
- Dec 9 AL OKs night baseball for St Louis
England Embarrasses Australia
Dec 9 England embarrasses Australia in the 1st Test in Brisbane; home side all out for 58 as England wins by 322 runs; Don Bradman out for a duck (0)
Edward VIII Abdicates
Dec 10 Edward VIII signs Instrument of Abdication, giving up the British throne to marry American divorcee Wallis Simpson
Ist Latin American Wins Peace Prize
Dec 10 Nobel Peace Prize awarded to Carlos Saavedra Lamas for mediating end to Chaco War between Paraguay and Bolivia, 1st Latin American to win
- Dec 10 Stockholm: physicist PBJ Debije receives Nobel prize for chemistry
Edward VIII Announces Abdictation
Dec 11 Edward VIII announces in a radio broadcast that he is abdicating the British throne to marry Wallis Simpson
- Dec 12 1937 NFL Draft: Sam Francis from University of Nebraska first pick by Philadelphia Eagles
China Declares War on Japan
Dec 12 Chinese leader Chiang Kai-shek declares war on Japan
Packers Defeat Redskins
Dec 13 National Football League Championship, Polo Grounds, NYC: Green Bay Packers beat Boston Redskins, 21-6; Packers 4th title; Redskins move to Washington, D.C. for 1937 season
- Dec 15 KVL-AM in Seattle Washington changes call letters to KEEN (now KING)
- Dec 16 John Monks and Fred Finklehoff's play "Brother Rat" premieres in New York City
- Dec 17 Ventriloquist Edgar Bergen and dummy Charlie McCarthy appear on TV
- Dec 18 Queensland cricket all out for 49 v Vic, Fleetwood-Smith 7-17
- Dec 18 Su-Lin, 1st giant panda to come to US from China, arrives in San Francisco
- Dec 21 Master batsman Don Bradman has a rare embarrassment - a 2nd consecutive Test duck (0), as England dismisses Australia for 80 in the 2nd Test at the Sydney Cricket Ground
- Dec 22 1st common carrier license issued by ICC, Scranton, Pa
- Dec 23 Colombia becomes a signatory to the Buenos Aires copyright treaty
- Dec 24 1st radioactive isotope medicine administered in Berkeley, California
- Dec 25 Belgian bishops condemn fascism & communism
- Dec 25 Ron Hamence scores 104 for SA v Queensland before 4,865
- Dec 26 Israel's Philarmonic Orchestra forms
Allen and Benny's Freud
Dec 30 Beginning of the "feud" between comedians Fred Allen and Jack Benny on Allen's "Town Hall Tonight" show
- Dec 30 United Auto Workers stage 1st sit-down strike, at Fisher Body Plant