- Oct 1 Cariba Heine, Australian actress
- Oct 2 Brittany Howard, American rock singer-songwriter and guitarist (Alabama Shakes), born in Athens, Alabama
- Oct 3 Alicia Vikander, actress (The Danish Girl), born in Gothenburg, Sweden
- Oct 3 ASAP Rocky [Rakim Mayers], American rapper (Long. Live. A$AP), born in New York City
- Oct 3 Tadhg Kelly, American actor
- Oct 4 Derrick Rose, American basketball point guard (NBA Draft 2008 #1 overall pick Chicago Bulls; NBA MVP 2011; NBA All-Star 2010–12), born in Chicago, Illinois
- Oct 4 Melissa Benoist, American actress and singer (Glee, Supergirl), born in Littleton, Colorado
- Oct 5 Bahar Kızıl, German singer (Monrose), born in Freiburg im Breisgau, Germany
- Oct 5 Bobby Edner, American actor, born in Downey, California
- Oct 5 Maja Salvador, Filipina actress, born in Aparri, Philippines
- Oct 6 Kayky Brito, Brazilian actor.
- Oct 6 Maki Horikita, Japanese model and actress
- Oct 7 Stacy DuPree, American musician (Eisley), born in The Woodlands, Texas
- Oct 10 Jodie Devos, Belgian operatic soprano, born in Libramont-Chevigny, Belgium
- Oct 10 Rose McIver, New Zealand actress (iZombie), born in Auckland, New Zealand
- Oct 12 Calum Scott, British pop singer-songwriter ("You Are The Reason"), born in Beverley, East Riding of Yorkshire, England
Candice Swanepoel (34 years old)
Oct 20 South African model (Victoria's Secret), born in Mooi River, South Africa
- Oct 20 Ma Long, Chinese table tennis player (Olympic and World Champion), born in Anshan, China
- Oct 20 Risa Niigaki, Japanese singer (Morning Musume), born in Yokohama, Japan
- Oct 21 Ajaz Patel, New Zealand cricket spin bowler (10-119 v India 2021; one of 3 to take 10 wickets in Test innings), born in Mumbai, India
- Oct 21 Hope Hicks, American political operative, White House Communications Director (2017-), born in Greenwich, Connecticut
- Oct 23 Nicolaj Agger, Danish football player, born in Hvidovre, Denmark
- Oct 24 Daniel Shalikar, American actor (Honey I Blew Up the Kid), born in East Brunswick, New Jersey
- Oct 24 Joshua Shalikar, American actor (Honey I Blew Up the Kid), born in East Brunswick, New Jersey
- Oct 25 (Ross) "Rylin" Clark, British TV personality, presenter, and model, born in Stepney, East London, England
- Oct 29 Katherine Timpf, American TV personality (Sincerely, Kat), born in Detroit, Michigan
- Oct 30 Janel Parrish, American actress (Pretty Little Liars), born in Oahu, Hawaii
- Oct 31 Sébastien Buemi, Swiss racing driver, born in Aigle, Switzerland
About October 1988
How Old? 34 years old
Generation: Millennial
Leap Year: Yes