- Dec 1 Andrew Tate, American-British media personality and kickboxer, born in Washington D.C.
- Dec 1 DeSean Jackson, American NFL wide receiver (Pro Bowl 2009-10, 13; Philadelphia Eagles), born in Los Angeles, California
- Dec 2 Claudiu Keșerü, Romanian soccer forward (37 caps; FC Nantes, Steaua București), born in Oradea, Romania
- Dec 2 Tal Wilkenfeld, Australian musician (Jeff Beck, Prince), born in Sydney, Australia
- Dec 3 Chandra Shekhar Aazad, Indian lawyer and activist (Bhim Army), born in Ghadkauli, Uttar Pradesh
- Dec 6 Matt Niskanen, American NHL player (Philadelphia Flyers), born in Virginia, Minnesota
- Dec 7 Billy Horschel, American golfer (FedEx Cup 2014, 5 PGA Tour titles), born in Grant, Florida
- Dec 8 Amir Khan, English boxer, born in Bolton, United Kingdom
- Dec 8 Kate Voegele, American musician, born in Bay Village, Ohio
- Dec 10 Matthew Bates, English footballer
- Dec 10 Ryoichi Tsukada, Japanese acrobat
- Dec 11 Condola Rashad, American actress (Ruined, Billions), born in New York City
- Dec 12 Përparim Hetemaj, Finnish footballer, born in Srbica, SFR Yugoslavia
- Dec 12 Thomas Wansey, English actor (Ace Lightning), born in Oxford
- Dec 15 Keylor Navas, Costa Rican soccer goalkeeper (100 caps 2021; Lavante UD, Real Madrid, Paris Saint-Germain), born in Pérez Zeledón, Costa Rica
- Dec 15 Snejana Onopka, Ukrainian supermodel, born in Sievierodonetsk, Soviet Union
Kit Harington (36 years old)
Dec 26 English actor (Game of Thrones), born in London, England
- Dec 27 Metrik [Tom Mundell], British electronic dance music producer and re-mixer ("Freefall"; "Gravity"; “Chasing Sunrise”), born in London, England
- Dec 27 Shelly-Ann Fraser-Pryce, Jamaican athlete (Olympic gold 100m 2008, 12; 9 x World C'ship gold), born in Kingston, Jamaica
- Dec 28 Tom Huddlestone, English footballer, born in Nottingham, United Kingdom
- Dec 29 Kim Ok-bin, South Korean actress, born in Suncheon, South Korea
Ellie Goulding (36 years old)
Dec 30 English singer and songwriter ("Lights", "Anything Could Happen"), born in Hereford, England
About December 1986
How Old? 36 years old
Generation: Millennial
Leap Year: No
Chinese Zodiac: Tiger
Star Signs: Sagittarius (Nov 22 - Dec 21), Capricorn (Dec 22 - Jan 19)