- Aug 2 Nacer Chadli, Belgian football player, born in Liège, Belgium
- Aug 3 Jules Bianchi, French auto racer (Marussia Formula 1 Racing Team), born in Nice, France (d. 2015)
- Aug 4 Jessica Mauboy, Australian singer (Young Divas), born in Darwin, Northern Territory, Australia
- Aug 5 Shanshan Feng, Chinese golfer (Women's PGA C'ship 2012), born in Guangzhou, China
- Aug 8 Sesil Karatantcheva, Bulgarian tennis player
- Aug 9 Stefano Okaka Chuka, Italian footballer, born in Castiglione del Lago, Italy
- Aug 10 Ben Sahar, Israeli footballer
- Aug 10 Sam Gagner, Canadian ice hockey player
- Aug 14 Kyle Turris, Canadian ice hockey player, born in New Westminster, Canada
- Aug 14 Meyne Wyatt, Australian actor (Redfern Now), born in Kalgoorlie, Australia
- Aug 14 Thorsten Margis, German bobsledder (4 x Olympic gold 2018, 22; 8 x World C'ship gold 2015-21), born in Bad Honnef, Germany
- Aug 15 Belinda [Belinda Peregrín Schüll], Mexican singer, songwriter and actress, born in Madrid, Spain
- Aug 15 Tiffanie Anderson, American singer, dancer, born in Los Angeles, California
- Aug 15 Joe Jonas, American pop singer (Jonas Brothers), born in Casa Grande, Arizona
- Aug 19 (Percy) Romeo [Miller], American rapper (Lil' Romeo) and actor, born in New Orleans, Louisiana
- Aug 20 Judd Trump, British snooker player (World C'ship 2019; UK C'ship 2011; Masters 2019), born in Bristol, England
- Aug 21 Hayden Panettiere, American actress (One Life to Live), born in Palisades, New York
- Aug 26 James Harden, American basketball guard (NBA MVP 2018; NBA All-Star 2013–19; Houston Rockets), born in Los Angeles, California
- Aug 28 Cécile McLorin Salvant, American jazz vocalist (Cecile, WomanChild), born in Miami, Florida
- Aug 28 Trixie Mattel [Brian Firkus], American drag queen, singer-songwriter, comedian, and television personality (The Trixie & Katya Show), born in Milwaukee, Wisconsin
- Aug 30 Bebe Rexha, American singer-songwriter (Meant To Be), born in New York City
About August 1989
How Old? 32 years old
Generation: Millennial
Leap Year: No