- Dec 1 Larry Walker, Canadian Baseball HOF right fielder (NL MVP 1997; NL batting champion 1998, 99, 2001; 5 x MLB All Star; 7 x Gold Glove; Montreal Expos, Colorado Rockies), born in Maple Ridge, British Columbia
- Dec 1 Steve Walsh, American football quarterback (NCAA C'ship 1987 University of Miami; NO Saints + 5 other NFL teams), born in Saint Paul, Minnesota
- Dec 2 Clive Eksteen, South African cricket spin bowler (7 Tests; ex-commercial manager Cricket SA), born in Johannesburg, South Africa
- Dec 2 Kelly Buchberger, Canadian NHL right wing and coach (World C'ship gold 1994; Stanley Cup 1987, 90; Edmonton Oilers), born in Langenburg, Saskatchewan
- Dec 3 Flemming Povlsen, Danish soccer forward and broadcaster (62 caps; Borussia Dortmund), born in Brabrand, Denmark
- Dec 5 Niege Dias, Brazilian tennis star, born in Santa Cruz do Sul, Brazil
- Dec 6 Natascha Badmann, Swiss triathlete (6-time winner of the Ironman World Championships), born in Basel, Switzerland
- Dec 7 Shinichi Ito, Japanese motorcycle racer (Japanese Superbike C'ship x 3; Suzuka 8 Hour Endurance Race x 3), born in Kakuda, Japan
- Dec 8 Joe Staysniak, American NFL guard (Indianapolis Colts), born in Elyria, Ohio
- Dec 8 Les Ferdinand, English footballer who scored 149 goals in the Premier League for various clubs, born in Acton, London
- Dec 9 Dana Murzyn, NHL defenseman (Vancouver Canucks), born in Calgary, Alberta
- Dec 10 Mel Rojas, MLB pitcher (Montreal Expos), born in Haina, Dominican Republic
- Dec 10 Norberto Martin, baseball infielder (Chicago White Sox), born in Santo Domingo, Dominican Republic
- Dec 12 Jim Sandlak, NHL right wing (Vancouver Canucks), born in Kitchener, Ontario
- Dec 14 Anthony Mason, American NBA forward, 1989-2003 (NY Knicks, Charlotte Hornets, and 4 other teams), born in Miami, Florida (d. 2015)
- Dec 14 Bill Ranford, Canadian NHL goalie, 1985-2000 (Boston Bruins, Edmonton Oilers, and 2 other teams, Team Canada), and goaltending coach (Los Angeles Kings), born in Brandon, Manitoba
- Dec 14 Carl Herrera, Trinidadian-born Venezuelan NBA forward, 1991-99 (San Antonio Spurs, and 2 other teams), born in Trinidad and Tobago
- Dec 14 Fabrizio Giovanardi, Italian racecar driver, born in Sassuolo, Italy
- Dec 15 Carl Hooper, West Indian cricket all-rounder (102 Tests, 13 x 100s, HS 233, 114 wickets; Demerara, Guyana, Kent CCC, Lancashire CCC), born in Georgetown, Guyana
- Dec 16 Clifford Robinson, American basketball center (NBA All-Star 1994; 6th Man of Year Award 1993; Phoenix Suns, Portland Trail Blazers), born in Buffalo, New York (d. 2020)
- Dec 16 Dennis Wise, English footballer
- Dec 17 Valeri Liukin, Soviet gymnast
- Dec 18 Patricia Neder, American team handball right wing (Olympics 1992 & 1996), born in Waukesha, Wisconsin
- Dec 18 Terry Phelps, American tennis player, born in Larchmont, New York
- Dec 19 Alberto Tomba, Italian alpine skier (Olympic gold Slalom 1988, Giant slalom 1988, 1992; silver Slalom 1992, 94), born in San Lazzaro di Savena, Bologna, Italy
- Dec 19 Rajesh Chauhan, Indian cricket spin bowler (21 Tests; 47 wickets; 35 ODIs; Madhya Pradesh), born in Ranchi, India
- Dec 20 Matt Neal, British motor racing driver, born in Stourbridge, United Kingdom
- Dec 20 Tim Hauck, NFL safety and coach (Denver Broncos, Seattle Seahawks), born in Butte, Montana
- Dec 22 Dmitry Bilozerchev, Soviet/Russian gymnast, born in Moscow, Russia
- Dec 23 Hans van Arum, Dutch soccer player (Vitesse, Willem II), born in Amersfoort, Netherlands
- Dec 25 Javier Frana, Argentine tennis player (French Open mixed doubles 1996 [Patricia Tarabini]; Wimbledon doubles 1991 runner-up; 3 x ATP singles titles, 7 doubles), born in Rafaela, Argentina
- Dec 26 Rickey Dixon, American College Football Hall of Fame cornerback (Jim Thorpe Award 1987; Oklahoma Sooners; Cincinnati Bengals, LA Raiders), born in Dallas, Texas (d. 2020)
- Dec 26 Tim Legler, NBA guard (Washington Wizards/Bullets), born in Washington, D.C.
- Dec 27 Bill Goldberg, American football player and professional wrestler
- Dec 29 Martin Offiah MBE, English rugby league winger (33 Tests GB, 5 England; 3rd on all-time try scoring list), born in London, England
- Dec 29 Stefano Eranio, Italian footballer, born in Genoa, Italy
About December 1966
How Old? 57 years old
Generation: Generation X
Leap Year: No
Chinese Zodiac: Horse
Star Signs: Sagittarius (Nov 22 - Dec 21), Capricorn (Dec 22 - Jan 19)
Baseball Players
Basketball Stars
Boxers
Footballers
NFL Stars
Tennis Champions