- Jan 1 Park Sung-hyun, South Korean archer (Olympics gold individual/team 2004, team 2008; women's WR in a FITA Round 1,405 points), born in Gunsan, South Korea
- Jan 5 Sean Dockery, American basketball player, born in Chicago, Illinois
- Jan 7 Liesbeth Mouha, Belgian beach volleyball player, born in Tongeren, Belgium
- Jan 7 Natalie Gulbis, American golfer (ANA Inspiration 2006 3rd), born in Sacramento, California
- Jan 8 Chris Mordetzky, American wrestler, born in Santa Monica, California
- Jan 10 Danilo Dirani, Brazilian racing driver, born in São Paulo, Brazil
- Jan 11 Adrian Sutil, German racing driver, born in Starnberg, Germany
- Jan 11 Matthew Palleschi, Canadian soccer player, born in Richmond Hill, Canada
- Jan 14 Maxime Monfort, Belgian cyclist, born in Bastogne, Belgium
- Jan 14 Vincent Jackson, American NFL wide receiver (Pro Bowl 2009, 11, 12; SD Chargers, TB Buccaneers), born in Colorado Springs, Colorado (d. 2021)
- Jan 15 Hugo Viana, Portuguese footballer, born in Barcelos, Portugal
- Jan 16 Emanuel Pogatetz, Austrian footballer, born in Graz, Austria
- Jan 17 Alvaro Arbeloa, Spanish footballer, born in Salamanca, Spain
- Jan 17 Johannes Herber, German basketball player, born in Darmstadt, Germany
- Jan 17 Rick Kelly, Australian racing driver, born in Mildura, Australia
- Jan 19 Justyna Kowalczyk, Polish cross-country skier (Olympic gold 30k classical 2010, 10k classical 2014), born in Limanowa, Poland
- Jan 20 Geovany Soto, Puerto Rican baseball player, born in San Juan, Puerto Rico
- Jan 21 Moritz Volz, German footballer
- Jan 21 Peter Philipakos, Greek-American soccer player
- Jan 22 Shaun Cody, American football player, born in Whittier, California
- Jan 24 Scott Speed, American race car driver, born in Manteca, California
- Jan 24 Shaun Maloney, Scottish soccer midfielder (47 caps; Celtic), born in Miri, Malaysia
- Jan 27 Carlo Colaiacovo, Canadian ice hockey player
- Jan 27 Gavin Floyd, American baseball player
- Jan 27 Mike Zagurski, American baseball player
- Jan 31 Tom Vangeneugden, Belgian swimmer, born in Overpelt, Belgium
About January 1983
How Old? 41 years old
Generation: Millennial
Leap Year: No
Baseball Players
Basketball Stars
Boxers
Footballers
NFL Stars
Tennis Champions