Thomas Müller (34 years old)
Sep 13 German soccer forward (winner FIFA World Cup 2014; Bayern Munich), born in Weilheim in Oberbayern, Germany
- Sep 14 Jimmy Butler, American basketball small forward (Olympic gold 2016; NBA All-Star 2015–18, 20, 22; Chicago Bulls, Minnesota Timberwolves, Philadelphia 76ers, Miami Heat), born in Houston, Texas
- Sep 14 Tony Finau, American golfer (Ryder Cup 2018; British Open 2019 3rd), born in Salt Lake City, Utah
- Sep 21 Lyn-Z Adams Hawkins, American skateboarder
- Sep 26 Jonny Bairstow, English cricket wicket-keeper (only English wicket-keeper to twice claim 9 dismissals in a Test match; Yorkshire CCC), born in Bradford, England
- Sep 27 Park Tae-Hwan, South Korean swimmer
- Sep 28 Mark Randall, English footballer, born in Milton Keynes
About September 1989
How Old? 34 years old
Generation: Millennial
Leap Year: No