- Sep 3 John Aston Sr., English soccer striker (17 caps; Manchester United 253 games), born in Prestwich, England (d. 2003)
- Sep 19 Joan Tozzer, American figure skater, born in Dedham, Massachusetts (d. 2012)
- Sep 24 Jim McKay, American sportscaster (ABC's Wide World of Sports; American Sportscasters Association HOF), born in Philadelphia, Pennsylvania (d. 2008)
About September 1921
How Old? 102 years old
Generation: Greatest Generation
Leap Year: No
Baseball Players
Basketball Stars
Boxers
Footballers
NFL Stars
Tennis Champions