- Jan 1 Jason Pierre-Paul, American NFL linebacker (Pro Bowl 2011-12; Super Bowl 2011, New York Giants), born in Deerfield Beach, Florida
- Jan 3 Ben Matulino, New Zealand rugby league forward (23 caps; NZ Warriors, Wests Tigers), born in Wellington, New Zealand
- Jan 3 Kōhei Uchimura, Japanese gymnast (Olympic gold all-round 2012; team, all-round 2016; World C'ships 10 x gold), born in Kitakyushu, Japan
- Jan 4 Graham Rahal, American race car driver, born in Columbus, Ohio
- Jan 5 Krisztián Németh, Hungarian soccer striker (37 caps; MTK Budapest, Roda JC, Sporting Kansas City), born in Győr, Hungary
- Jan 7 Emiliano Insúa, Argentine footballer, born in Buenos Aires, Argentina
- Jan 9 Michaella Krajicek, Dutch tennis player, born in Delft, Netherlands
Nick Foles (35 years old)
Jan 20 American NFL quarterback (Super Bowl LII MVP), born in Austin, Texas
Yani Tseng (35 years old)
Jan 23 Taiwanese golfer (5 major titles; British Open 2010-11), born in Guishan, Republic of China
About January 1989
How Old? 35 years old
Generation: Millennial
Leap Year: No
Baseball Players
Basketball Stars
Boxers
Footballers
NFL Stars
Tennis Champions