- Sep 1 Max Vieri, Australian soccer forward (6 caps; Verona, Napoli), born in Sydney, Australia
- Sep 2 Matthew Watkins, Welsh rugby union centre (18 caps; Newport, Llanelli Scarlets), born in Newport, Wales (d. 2020)
- Sep 3 John Curtis, English footballer, born in Nuneaton, England
- Sep 3 Michal Rozsival, Czech ice hockey player, born in Vlašim, Czechoslovakia
- Sep 5 Chris Jack, New Zealand rugby union footballer (All Blacks), born in Christchurch, New Zealand
- Sep 5 Sylvester Joseph, West Indian cricketer, born in New Winthorpes, Antigua
- Sep 5 Zhang Zhong, Chinese-Singaporean chess player, born in Chongqing, China
- Sep 6 Alex Escobar, Venezuelan baseball player, born in Valencia, Carabobo, Venezuela
- Sep 7 Erwin Koen, Dutch footballer, born in Den Helder, Netherlands
- Sep 8 Gerard Autet, Spanish footballer, born in Manlleu, Spain
- Sep 8 Gil Meche, American baseball player, born in Lafayette, Louisiana
- Sep 9 Kurt Ainsworth, American baseball pitcher, born in Baton Rouge, Louisiana
- Sep 9 Mariano Puerta, Argentine tennis player (World #9 2005; French Open runner-up 2005), born in San Francisco, Argentina
- Sep 9 Shane Battier, American basketball player, born in Birmingham, Michigan
- Sep 11 Dejan Stanković, Serbian footballer (Serbia National Team captain), born in Belgrade, Serbia
- Sep 11 Ed Reed, American Pro Football HOF safety (Super Bowl 2012 Baltimore Ravens; NFL Defensive Player of the Year 2004; 5 × First-team All-Pro; 9 × Pro Bowl), born in St. Rose, Louisiana
- Sep 13 Darren Kenton, English footballer (Norwich City), born in Wandsworth, England
- Sep 14 Ben Cohen, English rugby union outside back (57 Tests; Northampton RFC, CA Brive, Sale Sharks RFC), born in Northampton, England
- Sep 15 Eiður Guðjohnsen, Icelandic footballer (Chelsea, Barcelona) and manager, born in Reykjavík, iceland
- Sep 16 Dan Dickau, American basketball player, born in Portland, Oregon
- Sep 17 Shawn Horcoff, Canadian ice hockey player
- Sep 18 Augustine Simo, Cameroonian footballer, born in Bangangté, Cameroon
- Sep 19 Nick Johnson, American baseball player, born in Tempe, Arizona
- Sep 20 Dante Hall, American football player
- Sep 20 T.J. Tucker, American baseball player
- Sep 21 Doug Howlett, New Zealand rugby union footballer, born in Auckland, New Zealand
- Sep 22 Ed Joyce, Irish-English cricketer, born in Dublin, Ireland
- Sep 25 Joel Pineiro, Puerto Rican baseball player, born in Río Piedras, Puerto Rico
- Sep 25 Ricardo Gardner, Jamaican soccer winger (111 caps; Bolton Wanderers 342 games), born in St. Andrew Parish, Jamaica
- Sep 25 Roudolphe Douala, Cameroonian footballer, born in Douala, Cameroon
- Sep 27 Jon Rauch, American baseball player (tied equal tallest MLB player at 6ft 11in), born in Louisville, Kentucky
- Sep 30 Candice Michelle, American female wrestler
About September 1978
How Old? 45 years old
Generation: Generation X
Leap Year: No
Baseball Players
Basketball Stars
Boxers
Footballers
NFL Stars
Tennis Champions