- Dec 2 Robert Moevs, American composer, born in La Crosse, Wisconsin (d. 2007)
- Dec 6 Dave Brubeck, American jazz pianist ("Take Five") and composer (Gates of Justice), born in Concord, California (d. 2012)
- Dec 12 Dick James [Leon Vapnick], British dance band vocalist and Beatles' music publisher (Northern Songs), born in London, England (d. 1986)
- Dec 13 Frits Noske, Dutch musicologist (Signifier & the Signified), born in The Hague, Netherlands (d. 1993)
- Dec 14 Clark Terry, American jazz trumpeter, born in St Louis, Missouri (d. 2015)
- Dec 15 Howard Cable, Canadian conductor, arranger, and composer, born in Toronto, Ontario (d. 2016)
- Dec 18 Rita Streich, Russian-German soprano, born in Barnaul, southern Siberia (d. 1987)
- Dec 19 "Little" Jimmy Dickens, American country singer (Grand Ole Opry), born in Bolt, West Virginia (d. 2015)
- Dec 25 Jerome Richardson, American jazz musician, born in Oakland, California (d. 2000)
- Dec 26 Gote Carlid, Swedish composer, born in Hogbo near Sandviken (d. 1953)
- Dec 29 Irving Ashby, American jazz and session guitarist (Lionel Hampton - "Flying Home"; Nat King Cole Trio; Oscar Peterson Trio), born in Somerville, Massachusetts (d. 1987)
- Dec 31 Rex Allen, American actor and singer-songwriter known as the "the Arizona Cowboy" (Dr Baxter-Frontier Doctor), born in Willcox, Arizona (d. 1999)
About December 1920
How Old? 103 years old
Generation: Greatest Generation
Leap Year: Yes
Chinese Zodiac: Monkey
Star Signs: Sagittarius (Nov 22 - Dec 21), Capricorn (Dec 22 - Jan 19)
Country Singers
Jazz Singers
Opera Singers
Pop Singers
Rappers
Rock Singers