- Jul 2 Jüri Ratas, Estonian politician, Prime Minister of Estonia (20162021), born in Tallinn, Estonia
- Jul 3 Julie Klausner, American comedian, screenwriter, actress (Difficult People), podcaster, and author, born in New York City
- Jul 3 Katia Zygouli, Greek supermodel, born in Thessaloniki, Greece
- Jul 4 Becki Newton, American actress, born in New Haven, Connecticut
- Jul 4 Emile Mpenza, Belgian footballer, born in Zellik, Belgium
- Jul 4 Stephen McNally, British singer and songwriter (BBMak - "Back Here"; 10 Reasons to Live; The Last Arcade), born in Liverpool, England
- Jul 4 Tatyana Jecmenica, Serbian tennis star (1995 Futures-Novi Sad), born in Novi Sad, Serbia
- Jul 4 Vicky Kaya, Greek supermodel and actress, born in Athens, Greece
- Jul 6 Kevin Senio, New Zealand rugby player, born in Calgary, Alberta, Canada
- Jul 6 Tamera Mowry, American twin actress (Sister, sister), born in Gelnhausen, West Germany
- Jul 6 Tia Mowry, American twin actress (Sister, sister), born in Gelnhausen, West Germany
- Jul 7 Leonardo Morales, Venezuelan soccer goalkeeper (26 caps; Carabobo, Zulia), born in El Tigre, Venezuela
- Jul 7 Misia [Misaki Itō], Japanese singer (Mother Father Brother Sister), born in Omura, Japan
- Jul 9 Jesse Watters, American political commentator (Fox News), born in Philadelphia, Pennsylvania
- Jul 9 Linda Park, Korean-born American actress (Stra Trek: Enterprise), born in Seoul, South Korea
- Jul 9 Mark Medlock, German pop singer (Now Or Never), born in Frankfurt, Germany
- Jul 10 Jesse Lacey, American indie rock singer and guitarist (Brand New), born in Levittown, New York
- Jul 12 (Christopher) "Topher" Grace, American stage and screen actor (That '70s Show -"Eric"; In Good Company; Home Economics), born in New York City
- Jul 12 Claire Chitham, New Zealand actress known for "Shortland Street", born in Auckland, New Zealand
- Jul 12 Mélanie De Biasio, Belgian jazz singer, composer and flute player (A Stomach Is Burning), born in Charleroi, Belgium
- Jul 12 Michelle Rodriguez, American actress (Girlfight, Fast and Furious), born in San Antonio, Texas
- Jul 13 Ryan Ludwick, American baseball player
- Jul 15 Miguel Olivo, Dominican baseball player
- Jul 17 Émilie Simon, French pop singer-songwriter and electronic music composer, born in Montpellier, France
- Jul 17 Justine Triet, French filmmaker (Anatomy of a Fall), born in Fécamp, France
- Jul 17 Katharine Towne, American actress, born in Los Angeles, California
- Jul 17 Mike Hettinga, American professional wrestler, born in San Bernardino, California
- Jul 17 Ricardo Arona, Brazilian mixed martial artist, born in Niterói, Brazil
- Jul 18 Ben Sheets, American baseball player
- Jul 18 Eugene Cordero, American comedian, actor, and writer (Star Trek: Lower Decks; Loki), born in Detroit, Michigan
- Jul 18 Mélissa Theuriau, French newscaster for M6, born in Échirolles, France
- Jul 18 Shane Horgan, Irish rugby player
- Jul 18 Verónica Romeo [Sotoca], Spanish pop singer, born in Elche, Spain
- Jul 20 Charlie Korsmo, American child actor (Dick Tracy, What About Bob)
- Jul 20 Elliott Yamin, American singer-songwriter (American Idol, 2007; "Wait for You"), born in Los Angeles, California
- Jul 20 Jennifer Grubb, American soccer defender (12 caps; Washington Freedom), born in Elkhart Indiana
- Jul 20 Pavel Datsyuk, Russian ice hockey player
- Jul 20 Tamsyn Lewis, Australian athlete
- Jul 20 Will Solomon, American basketball player
- Jul 21 Damian Marley, Jamaican musician, born in Kingston, Jamaica
- Jul 21 Gary Teale, Scottish football player and coach, born in Glasgow, Scotland
- Jul 21 Josh Hartnett, American actor (Black Hawk Down) and movie producer (August), born in St. Paul, Minnesota
- Jul 21 Justin Bartha, American actor (National Treasure films), born in Fort Lauderdale, Florida
- Jul 21 Kyoko Iwasaki, Japanese swimmer (Olympic gold 200m breaststroke 1992), born in Numazu, Japan
- Jul 22 A. J. Cook, Canadian actress
- Jul 22 Dennis Rommedahl, Danish footballer
- Jul 22 Martyn Lee, English radio presenter
- Jul 22 Runako Morton, West Indian cricket batsman (15 Tests, 4 x 50, HS 70no; Leeward Islands, Trinidad & Tobago), born in Gingerland, Saint Kitts and Nevis (d. 2012)
- Jul 23 Lauren Groff, American writer, known for "Florida", born in Cooperstown, New York [1]
- Jul 23 Stefanie Sun, Singaporean pop singer-songwriter (Yan Zi), born in Singapore
- Jul 23 Stuart Elliott, Northern Irish footballer, born in Belfast, Northern Ireland
- Jul 24 Andy Irons, American surfer (ASP World Champion 2002-04), born in Kauai, Hawaii (d. 2010)
- Jul 25 Gerard Warren, American football player, born in Lake City, Florida
- Jul 25 Louise Brown, English woman who was the first person to be born through in vitro fertilization, born in Oldham, England
- Jul 28 Hitomi Yaida, Japanese singer-songwriter and guitarist, born in Toyonaka, Osaka
- Jul 28 Luka Udjbinac, Croatian jazz musician, born in Zagreb, Croatia
- Jul 31 Justin Wilson, English auto racer (International Formula 3000 C'ship; Champ Car Series 4 wins), born in Sheffield, South Yorkshire (d. 2015)
- Jul 31 Will Champion, British drummer (Coldplay - "Viva La Vida"), born in Southampton, England
- Jul 31 Zac Brown, American country-rock singer and guitarist (Zac Brown Band - "Toes"; "Knee Deep"), born in Dahlonega, Georgia
- Jul 31 Zeta Makripoulia, Greek actress, model and TV presenter
About July 1978
How Old? 45 or 46 years old
Generation: Generation X
Leap Year: No
20-29
30-39
40-49
50-59
80-89
Over 90