- Sep 1 Sammy Adjei, Ghanaian soccer goalkeeper (38 caps; FC Ironi Ashdod), born in Accra, Ghana
- Sep 2 Hiroki Yoshimoto, Japanese racing driver
- Sep 2 Dany Sabourin, French Canadian Goaltender in the National Hockey League
- Sep 3 The B.G. [Christopher Dorsey], American rapper, born in New Orleans, Louisiana
- Sep 3 Daniel Ruben Bilos, Argentinian footballer, born in Pergamino, Argentina
- Sep 3 (Jason) "Cone" McCaslin, Canadian punk rock bassist (Sum 41), born in North York, Ontario
- Sep 3 Jennie Finch, American softball player (Olympic Gold 2004, Silver 2008), born in La Mirada, California
- Sep 4 Hitomi Shimatani, Japanese pop singer, born in Kure, Japan
- Sep 4 Pat Neshek, American baseball player, born in Madison, Wisconsin
- Sep 4 Tamika Mallory, American activist and founder of Mallory Consulting, born in New York City, New York
- Sep 5 Franco Costanzo, Argentinian football goalkeeper, born in Río Cuarto, Argentina
- Sep 6 Samuel Peter, Nigerian-American heavyweight boxer, born in Akwa Ibom, Nigeria
- Sep 6 Joseph Yobo, Nigerian footballer (Nigerian national team captain), born in Kono, Rivers State, Nigeria
- Sep 6 Jillian Hall, American professional wrestler, born in Ashland, Kentucky
- Sep 6 Kerry Katona, British singer-songwriter (Atomic Kitten), born in Warrington, Cheshire, England
- Sep 7 Gabriel Milito, Argentine soccer defender (42 caps; Independiente, Zaragoza), born in Bernal, Argentina
- Sep 7 Javad Nekounam, Iranian soccer midfielder (151 caps; Pas, Osasuna), born in Rey, Iran
- Sep 7 Mark Prior, American baseball player, coach (Chicago Cubs), born in San Diego, California
- Sep 7 Sara Carrigan, Australian cyclist (Olympic gold, road race 2004), born in Gunnedah, New South Wales
- Sep 8 Teruyuki Moniwa, Japanese footballer, born in Atsugi, Kanagawa, Japan
- Sep 9 Todd Coffey, American baseball player, born in Forest City, North Carolina
Michelle Williams
Sep 9 Michelle Williams, American actress (Dawson's Creek), born in Kalispell, Montana
- Sep 10 Timothy Goebel, American figure skater (first to land quadruple salchow jump; Olympic bronze 2002; World C'ship silver 2002, 03), born in Evanston, Illinois
- Sep 10 [Michael] Mikey Way, American musician (My Chemical Romance), born in Kearny, New Jersey
- Sep 11 Antônio Pizzonia, Brazilian race car driver, born in Manaus, Amazonas, Brazil
- Sep 11 Mike Comrie, Canadian ice hockey player, born in Edmonton, Alberta, Canada
- Sep 12 Fernando César de Souza, Brazilian footballer, born in Jardinopolis, Brazil
- Sep 12 Gus G., Greek guitarist (Firewind, Dream Evil), born in Thessaloniki, Greece
- Sep 12 Sean Burroughs, American baseball player, born in Atlanta, Georgia
- Sep 12 Josef Vašíček, Czech ice hockey player, born in Havlíčkův Brod, Czechoslovakia
- Sep 12 Yao Ming, Chinese basketball player, born in Shanghai
- Sep 13 Ben Savage, American actor (Little Monsters, Wild Palms), born in Chicago, Illinois
- Sep 13 Evangelos Nastos, Greek footballer, born in Thessaloniki, Greece
- Sep 13 Han Chae-young, South Korean actress, born in Daegu, South Korea
- Sep 13 Daisuke Matsuzaka, Japanese baseball player, born in Aomori, Japan
- Sep 13 Michelle Nolan, American musician (Straylight Run), born in Rockville Centre, New York
- Sep 13 Teppei Teranishi, American guitarist (Thrice), born in California
- Sep 15 David Diehl, American football player (NY Giants), born in Chicago, Illinois
- Sep 15 Jolin Tsai, Taiwanese pop singer, born in Taipei, Taiwan
- Sep 15 Mike Dunleavy, Jr., American basketball player and manager (Golden State Warriors), born in Fort Worth, Texas
- Sep 16 Patrik Štefan, Czech ice hockey player, born in Příbram, Czechoslovakia
- Sep 17 Asashoryu Akinori, Mongolian sumo wrestler (born as Dolgorsuren Dagvador)
- Sep 17 Danny Haren, American baseball player
- Sep 18 Avi Strool, Israeli footballer, born in Tel Aviv, Israel
- Sep 18 Charles Hedger, British musician (Cradle of Filth)
- Sep 18 Chris Tarrant, Australian Rules football player, born in Mildura, Australia
- Sep 18 Adeel Akhtar, English actor (Murdered by My Father), born in London, England
- Sep 19 Sara Quin, Canadian singer and songwriter (Tegan and Sara), born in Calgary, Alberta
- Sep 19 Tegan Quin, Canadian singer and songwriter (Tegan and Sara), born in Calgary, Alberta
- Sep 20 Vladimir Karpets, Russian cyclist
- Sep 20 Mariacarla Boscono, Italian fashion model
- Sep 20 Jonathan Le Billon, British actor
- Sep 21 Robert Hoffman, American actor
- Sep 21 Kareena Kapoor, Indian actress (3 Idiots), born in Bombay, India
- Sep 21 Nyree Lewis, British Paralympic swimmer
- Sep 21 Aleksa Palladino, American actress
- Sep 21 Autumn Reeser, American actress
- Sep 21 Tomas Scheckter, South African racing driver
- Sep 22 Fernanda Tavares, Brazilian supermodel, born in Natal, Brazil
- Sep 23 Cameron Litvack, American television producer
- Sep 24 Petri Pasanen, Finnish footballer, born in Lahti, Findland
- Sep 24 John Arne Riise, Norwegian footballer, born in Molde, Norway
- Sep 24 Daniele Bennati, Italian professional road racing cyclist, born in Arezzo, Italy
- Sep 24 Dean Canto, Australian racing driver (Supercars), born in Sydney, Australia
- Sep 25 T.I. [Clifford Joseph Harris Jr.], American rapper and actor (Bring Em Out, Dead and Gone), born in Atlanta, Georgia
- Sep 26 Patrick Friesacher, Austrian race car driver, born in Wolfsberg, Austria
- Sep 26 Henrik and Daniel Sedin, Swedish ice hockey players, born in Örnsköldsvik, Sweden
- Sep 29 Dallas Green, Canadian musician (Alexisonfire, City and Colour), born in St. Catharines, Ontario
- Sep 29 Zachary Levi [Pugh], American actor (Chuck), born in Lake Charles, Louisiana
- Sep 29 Patrick Agyemang, English footballer, born in London, England
- Sep 29 Maria Huld Markan Sigfúsdóttir, Icelandic composer (Aequora; Kom vinur), born in Iceland
- Sep 29 Chrissy Metz, American actress and singer (This Is Us), born in Homestead, Florida
Martina Hingis
Sep 30 Martina Hingis, Swiss tennis player (5 Grand Slam singles titles), born in Košice, Slovakia
- Sep 30 Camilla D'Errico, Canadian comic book artist and painter
- Sep 30 Virgil Abloh, American designer (Louis Vuitton menswear), 1st African American artistic director at a French fashion house, born in Rockford, Illinois
About September 1980
How Old? 41 years old
Generation: Generation X
Leap Year: Yes