- Aug 3 Mamie Gummer, American actress (Nancy Crozier-The Good Wife), born in New York City
Greta Gerwig (40 years old)
Aug 4 American actress and film director (Lady Bird, Little Women, Barbie), born in Sacramento, California
- Aug 5 Kara Tointon, English actress (EastEnders), born in Basildon, England
- Aug 7 Tina O'Brien, British actress, born in Manchester, England
- Aug 8 Guy Burnet, British actor (Hollyoaks), born in London, England
- Aug 9 Ashley Johnson, American actress (Chrissy-Growing Pains), born in Camarillo, California
Chris Hemsworth (40 years old)
Aug 11 Australian actor (Thor, Avengers), born in Melbourne, Victoria
- Aug 14 Mila Kunis, Ukrainian-American actress (Friends with Benefits; That '70s Show - "Jacki'"), born in Chernivtsi, Ukraine SSR, Soviet Union
Anita Sarkeesian (40 years old)
Aug 15 Canadian-American blogger and feminist media critic (Tropes vs. Women in Video Games), born in Canada
- Aug 16 Colin Griffiths, English TV presenter and DJ, born in Kent, England
- Aug 18 Mika [Michael Holbrook Penniman] British-American pop singer (Grace Kelly; Dodgy Holiday), an Italian television personality, born in Beirut, Lebanon
- Aug 19 Reeva Steenkamp, South African model and paralegal (killed by boyfriend Oscar Pistorius), born in Cape Town, South Africa (d. 2013)
- Aug 19 Tammin Sursok, Australian actress and singer, born in Johannesburg, South Africa
Andrew Garfield (40 years old)
Aug 20 British American actor (The Amazing Spider-Man), born in Los Angeles, California
- Aug 21 Brody Jenner, American actor, born in Los Angeles, California
- Aug 21 Chantelle Houghton, British TV personality, born in Wickford, Essex, England
- Aug 22 Laura Breckenridge, American actress (Rose Sorelli-Related), born in Flourtown, Pennsylvania
- Aug 24 Christopher Parker, British actor (Eastenders), born in London
- Aug 24 Martha Higareda, Mexican actress and filmmaker (Altered Carbon), born in Villahermosa, Mexico
- Aug 25 Janet Chow, Canadian/Chinese beauty pageant contestant
- Aug 27 Wilson Chen, Taiwanese actor
- Aug 28 Alfonso Herrera, Mexican actor, and pop singer (RBD), born in Mexico City
- Aug 29 Jennifer Landon, American actress (As the World Turns), born in Malibu, California
- Aug 30 Jun Matsumoto, Japanese singer and actor, born in Toshima, Tokyo
About August 1983
How Old? 40 or 41 years old
Generation: Millennial
Leap Year: No