- Sep 2 Marcus Ericsson, Swedish auto racer (Indianapolis 500 2022, runner-up 2023; Formula BMW UK 2007; All-Japan Formula 3 C'ship 2009), born in Kumla, Sweden
- Sep 5 Kim Yu-Na, Korean figure skater, born in Wonmi-gu, South Korea
- Sep 6 John Wall, American basketball point guard (2010 NBA Draft: #1 pick Washington Wizards), born in Raleigh, North Carolina
- Sep 7 Tanja Kolbe, German ice dancer, born in Berlin, Germany
- Sep 8 Gerrit Cole, American MLB player (NY Yankees), born in Newport Beach, California
- Sep 8 Jos Buttler, English cricket wicketkeeper (HS 152; Somerset CCC, Lancashire CCC, Rajasthan Royals, Sydney Thunder), born in Taunton, England
- Sep 8 Matt Barkley, American NFL football quarterback (Buffalo Bills), born in Newport Beach, California
- Sep 8 Matthew Dellavedova, Australian basketball player (Cleveland Cavaliers), born in Maryborough, Australia
- Sep 9 Shaun Johnson, New Zealand Rugby League halfback (Auckland Warriors, Cronulla Sharks), born in Auckland, NZ
- Sep 14 Douglas Costa, Brazilian footballer (Juventus), born in Sapucaia do Sul, Brazil
- Sep 18 Michael Smith, English darts player (World C'ship, Grand Slam of Darts 2022), born in St. Helens, England
- Sep 19 Kieran Trippier, English footballer (Newcastle United, England), born in Bury, England
John Tavares (33 years old)
Sep 20 Canadian ice hockey player (New York Islanders), born in Mississauga, Ontario
- Sep 21 Rob Cross, English darts player (PDC World Champion 2018), born in Pembury, England
- Sep 25 Mao Asada, Japanese figure skater, born in Nagoya, Japan
About September 1990
How Old? 33 years old
Generation: Millennial
Leap Year: No
Baseball Players
Basketball Stars
Boxers
Footballers
NFL Stars
Tennis Champions