- Jan 3 Yoichiro Kakitani, Japanese soccer midfielder (18 caps; Cerezo Osaka), born in Osaka, Japan
- Jan 4 Toni Kroos, German soccer midfielder (106 caps, FIFA World Cup 2014; Bayern Munich, Real Madrid), born in Greifswald, Germany
- Jan 7 Elene Gedevanishvili, Georgian figure skater, born in Tbilisi, Georgia
- Jan 7 Gregor Schlierenzauer, Austrian ski jumper, born in Tyrol, Austria
- Jan 10 Tao Li, Singaporean Olympic swimmer, born in Wuhan, China
- Jan 12 Sergey Karjakin, Ukrainian chess player, born in Simferopol
- Jan 15 Fernando Forestieri, Italian footballer, born in Rosario, Argentina
- Jan 18 Gift Ngoepe, South African-born baseball player, 1st black African to play in Major League Baseball, born in Pietersburg, South Africa
- Jan 18 Nacho [José Ignacio Fernández Iglesias] Spanish football player (Real Madrid, Spain), born in Madrid, Spain
Peter Sagan (34 years old)
Jan 26 Slovakian professional cyclist (World Road Champion 2016), born in Žilina, Slovakia
About January 1990
How Old? 34 years old
Generation: Millennial
Leap Year: No
Baseball Players
Basketball Stars
Boxers
Footballers
NFL Stars
Tennis Champions