- Oct 1 Cariba Heine, Australian actress
- Oct 2 Brittany Howard, American rock singer-songwriter and guitarist (Alabama Shakes), born in Athens, Alabama
- Oct 3 ASAP Rocky [Rakim Mayers], American rapper (Long. Live. A$AP), born in New York City
- Oct 3 Tadhg Kelly, American actor
- Oct 3 Alicia Vikander, actress (The Danish Girl), born in Gothenburg, Sweden
- 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 Maki Horikita, Japanese model and actress
- Oct 6 Kayky Brito, Brazilian actor.
- 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 14 MacKenzie Mauzy, American actress
- Oct 14 Max Thieriot, American actor
- Oct 15 Mesut Özil, Turkish-German football player (Arsenal, German national team), born in Gelsenkirchen, West Germany
- Oct 16 Zoltán Stieber, Hungarian footballer
- Oct 20 Risa Niigaki, Japanese singer (Morning Musume)
- Oct 20 Ma Long, Chinese table tennis player (Olympic and World Champion), born in Anshan, China
- Oct 21 Hope Hicks, American political operative, White House Communications Director (2017-), born in Greenwich, Connecticut
- Oct 23 Nicolaj Agger, Danish football player
- 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 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? 32 years old
Generation: Millennial
Leap Year: Yes