- Sep 1 Mushfiqur Rahim, Bangladeshi cricket batsman (75 Tests, 7 x 100s, TS 219*; Rajshahi Division), born in Bogra, Bangladesh
- Sep 2 Ishant Sharma, Indian cricket fast bowler (102 Tests, 306 wickets; 80 ODIs, 115 wickets; Sussex, Delhi Capitals), born in Delhi, India
- Sep 3 Carla Suárez Navarro, Spanish tennis player (2 WTA, 6 ITF titles), born in Las Palmas, Spain
- Sep 4 John Tyler Hammons, American politician, born in Muskogee, Oklahoma
- Sep 7 Kevin Love, American basketball player, born in Santa Monica, California
- Sep 8 Arrelious Benn, American football wide receiver, born in Washington, D. C.
- Sep 8 Brittney Spencer, American country music singer–songwriter ("Sober & Skinny"), born in Baltimore, Maryland
- Sep 8 Caitlin Hill, Australian YouTube personality (TheHill88), born in Brisbane, Queensland, Australia
- Sep 8 Chantal Jones, American fashion model, born in Austin, Texas
- Sep 10 Coco Rocha, Canadian model, born in Toronto, Ontario
- Sep 10 Jordan Staal, Canadian ice hockey center (World C'ship gold 2007; Stanley Cup 2009 Pittsburgh Penguins; Carolina Hurricanes captain), born in Thunder Bay, Ontario
- Sep 12 Aaron Sidwell, English actor and singer, born in Maidstone, Kent, England
- Sep 13 Keith Treacy, Irish footballer (Preston North End), born in Dublin, Ireland
- Sep 14 Kirsten Haglund, American activist and beauty queen (Miss America 2008), born in Farmington Hills, Michigan
- Sep 14 Martin Fourcade, French biathlete (5 Olympic gold 2014, 18), born in Perpignan, France
- Sep 14 Muni Long [Priscilla Hamilton], American singer-songwriter (Hrs and Hrs), born in Vero Beach, Florida
- Sep 15 (Yekaterina) "Kate" Grigorieva, Russian fashion model (Victoria's Secret), born in Olenegorsk, Murmansk, USSR
- Sep 15 Chelsea Staub, American actress (Jonas), born in Phoenix, Arizona
- Sep 16 Sarah Steele, American actress (The Good Wife), born in Philadelphia, Pennsylvania
- Sep 16 Teddy Geiger, American singer and songwriter (Stitches - Shawn Mendes), born in Rochester, New York
- Sep 18 Annette Obrestad, Norwegian poker player and YouTuber, born in Sandnes, Norway
- Sep 18 Lukas Forchhammer, Danish singer, songwriter, and multi-instrumentalist (Lukas Graham - "7 Years"), born in Freetown Christiania, Denmark
- Sep 21 Bilawal Bhutto Zardari, Pakistani politician
- Sep 22 Bethany Dillon, American Christian musician, born in Bellefontaine, Ohio
Juan Martín del Potro (35 years old)
Sep 23 Argentine tennis player (US Open 2009), born in Tandil, Argentina
- Sep 24 Karl Alzner, Canadian hockey player, born in Burnaby, British Columbia
- Sep 24 Lisa Wang, American gymnast, born in Madison, Wisconsin
- Sep 26 James Blake, English musician and singer-songwriter (Assume Form), born in Enfield, England
- Sep 26 Lilly Singh, Canadian YouTube vlogger (IISuperwomanII), born in Scarborough, Toronto
- Sep 26 Mark Simpson, British clarinetist and contemporary classical composer (Ariel; Israfel), born in Liverpool, England
- Sep 28 Aleks Vrteski, Australian footballer
- Sep 28 Esmée Denters, Dutch pop and R&B singer ("Outta Here", "Until You Were Gone"), born in Arnhem, Netherlands
- Sep 28 Marin Čilić, Croatian tennis player (US Open 2014), born in Medjugorje, Bosnia & Herzegovina
- Sep 29 Justin Nozuka, Canadian-American singer-songwriter, born in New York City
Kevin Durant (35 years old)
Sep 29 American basketball forward (NBA C'ship, NBA Finals MVP 2017, 18 Golden State Warriors; 11 × NBA All-Star; NBA All-Star Game MVP 2012, 19; Olympic gold 2012, 16, 20), born in Washington, D.C.
About September 1988
How Old? 35 years old
Generation: Millennial
Leap Year: Yes
Year of the Rabbit
Year of the Dragon
Year of the Snake
Year of the Horse
Year of the Goat/Sheep
Year of the Monkey