- Dec 1 Mohammad Kaif, Indian cricket batsman (13 Tests, top score 148; 125 ODIs), born in Allahabad, Uttar Pradesh, India
- Dec 1 Mubarak Hassan Shami, Qatari athlete (Vienna 2005, Prague 2006, Paris 2007 marathons), born in Baringo, Kenya
- Dec 2 Adam Kreek, Canadian rower (Olympic gold eights 2008; World C'ship gold 2002-3, 07), born in London, Ontario
- Dec 6 Ehren Wassermann, American baseball player, born in Sylacauga, Alabama
- Dec 6 Steve Lovell, British footballer (Dundee), born in Amersham, England
- Dec 7 John Terry, English soccer defender (78 caps; Chelsea), born in London, England
- Dec 8 Brandt Snedeker, American golfer (US Masters 2008, British Open 2012 3rd), born in Nashville, Tennessee
- Dec 9 Ryder Hesjedal, Canadian cyclist, born in Victoria, Canada
- Dec 14 Didier Zokora, Ivorian footballer, born in Abidjan, Ivory Coast
- Dec 17 Ryan Hunter-Reay, American race car driver
- Dec 20 Ashley Cole, English soccer defender (107 caps; Arsenal 156 games, Chelsea 229 games, LA Galaxy), born in London, England
- Dec 20 Fitz Hall, English footballer, born in Leytonstone, London
- Dec 20 Tony [Anthony da Silva], French-born Portuguese footballer, born in Le Creusot, France
- Dec 21 Royce Ring, American baseball player, born in La Mesa, California
- Dec 23 Cody Ross, American baseball player, born in Portales, New Mexico
- Dec 25 Locó [Manuel Armindo Morais Cange], Angolan soccer defender (40 caps; Primeiro de Agosto, Petro Atlético, Santos), born in Luanda, Angola
- Dec 25 Marcus Trufant, American football cornerback (Pro Bowl 2007 Seattle Seahawks; Jacksonville Jaguars), born in Tacoma, Washington
- Dec 27 Claudio Castagnoli, Swiss wrestler
- Dec 28 Lomana LuaLua, Congolese football player, born in Kinshasa, Democratic Republic of the Congo
Richie McCaw (43 years old)
Dec 31 New Zealand rugby union flanker (148 Tests, 110 as captain All Blacks; 3 x IRB Player of the Year; Rugby World Cup 2011, 15; IRB HOF), born in Oamaru, New Zealand
About December 1980
How Old? 43 years old
Generation: Generation X
Leap Year: Yes
Chinese Zodiac: Monkey
Star Signs: Sagittarius (Nov 22 - Dec 21), Capricorn (Dec 22 - Jan 19)
Baseball Players
Basketball Stars
Boxers
Footballers
NFL Stars
Tennis Champions