- Aug 2 Gabe Cohen, American journalist, son of journalists Meredith Viera & Richard Cohen
- Aug 9 Alexa Bliss [Alexis Cabrera], American professional wrestler (WWE), born in Columbus, Ohio
- Aug 9 Hansika Motwani, Indian actress (Desamuduru), born in Bombay, India
- Aug 12 Khris Middleton, American NBA player (Milwaukee Bucks), born in Charleston, South Carolina
- Aug 12 Lakeith Stanfield, American actor (Straight Outta Compton), born in San Bernardino, California
- Aug 16 Evanna Lynch, Irish actress, born in Termonfeckin, Republic of Ireland
- Aug 16 Sarah-Jeanne Labrosse, Canadian actress, born in Montreal, Quebec
- Aug 16 Young Thug [Jeffery Williams], American rapper and songwriter ("Stoner"; "This Is America"), born in Atlanta, Georgia
- Aug 17 Austin Butler, American actor (Once Upon a Time in Hollywood, Elvis), born in Anaheim, California
- Aug 18 Liz Cambage, Australian basketball center (WNBA single game record 53), born in London, England
- Aug 19 Salem Al-Dawsari, Saudi Arabian football player (Al Hilal, Saudi Arabia), born in Wadi ad-Dawasir, Saudi Arabia
- Aug 21 Christian Navarro, American actor (13 Reasons Why), born in The Bronx, New York
Dylan O'Brien (32 years old)
Aug 26 American actor (Thomas-Maze Runner, Stiles Stilinski-Teen Wolf), born in New York City
- Aug 27 Young Mazino [Christopher Young Kim ], American actor (Beef), born in Montgomery County, Maryland
- Aug 28 Kyle Massey, American actor and rapper, born in Atlanta, Georgia
- Aug 28 Sarah Jane Santos, Filipina pop singer, born in Manila, Philippines
- Aug 31 Shi Tingmao, Chinese diver (4 x Olympic gold 3m springboard, 3m synchro 2016, 2020; 8 x World C'ship gold), born in Chongqing, China
About August 1991
How Old? 32 years old
Generation: Millennial
Leap Year: No
Chinese Zodiac: Goat/Sheep
Star Signs: Leo (Jul 23 - Aug 22), Virgo (Aug 23 - Sep 22)
Greatest Generation
Silent Generation
Baby Boomer
Generation X
Millennial
Generation Z