- Aug 6 Robin van Persie, Dutch footballer
- Aug 9 Shane O'Brien, Canadian hockey player, born in Port Hope, Ontario
- Aug 10 Alexander Perezhogin, Russian ice hockey player
- Aug 10 Mathieu Roy, Canadian ice hockey player
- Aug 12 Klaas-Jan Huntelaar, Dutch footballer
- Aug 13 Aleš Hemský, Czech ice hockey player, born in Pardubice, Czechoslovakia
- Aug 13 Ľubomír Michalík, Slovakian soccer defender (8 caps; Bolton Wanderers, Leeds United, Carlisle United, Portsmouth), born in Čadca, Slovakia
- Aug 14 Elena Baltacha, Ukrainian-British tennis player, born in Kyiv, Ukraine (d. 2014)
- Aug 14 Leo Núñez, Dominican baseball player, born in Bonao, Dominican Republic
- Aug 16 Colton James "Colt" Brennan, NFL Quarterback (Washington Redskins), born in Laguna Beach, California
- Aug 16 Nikos Zisis, Greek basketball player, born in Thessaloniki, Greece
- Aug 17 Dustin Pedroia, American baseball player (Boston Red Sox), born in Woodland, California
- Aug 18 Kris Boyd, Scottish footballer, born in Irvine, Scotland
- Aug 18 Michael Montgomery, American football defensive end, born in Carthage, Texas
- Aug 19 John McCargo, American football player, born in Drakes Branch, Virginia
- Aug 19 Mike Conway, British auto racer (FIA World Endurance C'ship 2019-20; British Formula 3 C'ship 2006), born in London, England
- Aug 21 Josh Harrington, American professional BMX rider, born in Greenville, North Carolina
- Aug 22 Theo Bos, Dutch cyclist, five time world champion, born in Hierden, Netherlands
- Aug 23 Sun Mingming, Chinese basketball player, World's tallest player at 7ft 9in, born in Bayan County, China
- Aug 24 Marcel Goc, German ice hockey player, born in Calw, Germany
- Aug 25 James Rossiter, British racing driver (Formula One), born in Oxford, England
- Aug 26 Félix Porteiro, Spanish racing driver, born in Castellón, Spain
- Aug 28 Lasith Malinga, Sri Lankan cricket fast bowler (4 wickets in 4 balls x 2; 4 x ODI, T20 hat tricks; 30 Tests), born in Galle, Sri Lanka
- Aug 29 Timothy Bradley, American boxer (WBC light welterweight title 2008, 2011, WBO light welterweight 2009-12), born in Palm Springs, California
- Aug 30 Gustavo Eberto, Argentine footballer, born in Paso de los Libres, Argentina (d. 2007)
- Aug 31 Larry Fitzgerald, American NFL player Arizona Cardinals), born in Minneapolis, Minnesota
About August 1983
How Old? 40 years old
Generation: Millennial
Leap Year: No
Baseball Players
Basketball Stars
Boxers
Footballers
NFL Stars
Tennis Champions