- Sep 1 José Antonio Reyes, Spanish soccer left wing (Spain 21 caps; Sevilla, Atlético Madrid, Arsenal), born in Utrera, Spain (d. 2019)
- Sep 3 Augusto Farfus, Brazilian racing driver, born in Curitiba, Brazil
- Sep 3 Nicky Hunt, English footballer, born in Westhoughton, England
- Sep 4 Tareq Aziz, Bangladeshi cricketer, born in Chittagong, Bangladesh
- Sep 4 Yuichi Nakamaru, Japanese idol and singer-songwriter (KAT-TUN), born in Tokyo, Japan
- Sep 5 Eugen Bopp, Ukrainian-German footballer, born in Kyiv, Ukraine
- Sep 5 Pablo Granoche, Uruguayan footballer, born in Montevideo, Uruguay
- Sep 6 Pippa [Philippa] Middleton, English sister of Catherine, Duchess of Cambridge, born in Berkshire, England
- Sep 7 Annette Dytrt, German skater figure, born in Landshut, Germany
- Sep 7 Mehmet Topuz, Turkisher footballer (Kayserispor), born in Caferli Köyü, Yozgat, Turkey
- Sep 7 Philip Deignan, Irish cyclist (UCI Pro Team), born in Letterkenny, County Donegal, Ireland
- Sep 7 Pops Mensah-Bonsu, British basketball player for the Dallas Mavericks, born in Tottenham, London
- Sep 8 Chris Judd, Australian rules football player, born in Melbourne, Australia
- Sep 8 Diego Benaglio, Swiss-Italian footballer, born in Zürich, Switzerland
- Sep 8 Wali Lundy, American NFL football player, born in New Brunswick, New Jersey
- Sep 8 Will Blalock, American basketball player, born in Boston, Massachusetts
- Sep 9 Cleveland Taylor, English-born Jamaican footballer, born in Leicester, United Kingdom
- Sep 9 Edwin Jackson, American baseball pitcher, born in Neu-Ulm, Germany
- Sep 9 Kyle Davies, American baseball player, born in Decatur, Georgia
- Sep 9 Sam Hollenbach, American football quarterback, born in Doylestown, Pennsylvania
- Sep 10 Joey Votto, Canadian baseball first baseman (NL MVP 2010; 6 × MLB All-Star; Cincinnati Reds), born in Toronto, Ontario
- Sep 11 Ike Diogu, Nigerian-American basketball player, born in Buffalo, New York
- Sep 11 Jacoby Ellsbury, American baseball player, born in Madras, Oregon
- Sep 12 Carly Smithson, Irish singer (Ultimate High), born in Dublin, Ireland
- Sep 12 Daniel Muir, American football player, born in Washington, D.C.
- Sep 13 James Bourne, English singer and songwriter (Busted), born in Rochford, Essex, England
- Sep 13 Sean Brosnan II, American actor and son of actor Pierce Brosnan, born in Los Angeles, California
Amy Winehouse (1983-2011)
Sep 14 British singer-songwriter ("Stronger Than Me"; "Rehab"), born in London
- Sep 14 Frostee Rucker, American NFL defensive end, born in Tustin, California
- Sep 15 Luke Hochevar, American baseball player (KC Royals), born in Denver, Colorado
- Sep 16 Kirsty Coventry, Zimbabwean Olympic swimmer, born in Harare, Zimbabwe
- Sep 17 Jennifer Peña, American Tejano/Latin pop singer, born in San Antonio, Texas
- Sep 18 Kevin Doyle, Irish footballer, born in Adamstown, Ireland
- Sep 19 Charlie Haeger, American baseball player, born in Livonia, Michigan
- Sep 19 Joey Devine, American baseball player, born in Junction City, Kansas
- Sep 19 Matt Wiman, American mixed martial artist, born in Denver, Colorado
- Sep 20 Ángel Sánchez, Puerto Rican baseball player
- Sep 20 Yuna Ito, American pop singer (Heart) and actress of Japanese and Korean heritage, born in Los Angeles, California
- Sep 21 Anna Meares, Australian cyclist
- Sep 21 Fernando Cavenaghi, Argentinian footballer
Joseph Mazzello (39 years old)
Sep 21 American actor (Jurassic Park, The Pacific), born in Rhinebeck. New York
Donald Glover (39 years old)
Sep 25 American actor, singer and writer (Atlanta, Childish Gambino), born in Edwards Air Force Base, California
- Sep 25 Terrance Pennington, National Football League guard, born in Los Angeles, California
- Sep 26 Ricardo Quaresma, Portuguese footballer, born in Lisbon, Portugal
- Sep 26 Zoe Perry, American stage and screen actress (Young Sheldon), born in Chicago, Illinois
- Sep 27 Jeon Hye Bin, Korean actress
- Sep 27 Shermon Tang, Hong Kong actress
- Sep 27 Travis MacRae, Canadian folk-blues singer-songwriter, guitarist, and harmonica player born in Canada
- Sep 28 Stefan Moore, English footballer
- Sep 29 Lisette Oropesa, Cuban-American operatic soprano (Metropolitan Opera, 2007-present), born in New Orleans, Louisiana
- Sep 30 Andreea Răducan, Romanian gymnast, born in Bârlad, Romania
About September 1983
How Old? 39 years old
Generation: Millennial
Leap Year: No