- May 1 Tommy Robredo, Spanish tennis player (12 ATP titles), born in Hostalric, Spain
- May 1 Jamie Dornan, Irish actor (Fifty Shades of Grey), born in Belfast, Northern Ireland
- May 1 Katya [Brian McCook] American drag queen, comedian and TV performer (The Trixie and Katya Show), born in Boston, Massachusetts
- May 1 Darijo Srna, Croatian soccer defender (Croatia 134 caps), born in Metković, Croatia
- May 2 Lorie [Laure Pester], French singer, born in Le Plessis-Bouchard, Île-de-France
- May 3 Igor Olshansky, Ukrainian-American football player, born in Dnipro, Ukraine
- May 4 Kleopas Giannou, Greek footballer, born in Peristeri, Athens
- May 4 Markus Rogan, Austrian swimmer, born in Vienna, Austria
- May 4 Hector King, Mexican singer and songwriter, born in Culiacán, Mexico
- May 4 Rasheeda, American hiphop singer, born in Decatur, Illinois
- May 5 Wouter D'Haene, Belgian flatwater canoer
- May 5 Randall Gay, National Football League player
- May 5 Edyta Sliwinska, Polish ballroom dancer
- May 5 Jay Bothroyd, English footballer
- May 5 Dieter Brummer, Australian TV Actor
- May 7 Akos Buzsaky, Hungarian Football player
- May 8 Adrian Gonzalez, American baseball player
- May 9 Rachel Boston, American actress
- May 10 Daniel Harris, Australian rules footballer
- May 10 Despina Caldis, Greek-Australian actress
- May 10 Jeremy Gable, American playwright
- May 11 Jonathan Jackson, actor (Lucky-General Hospital), born in Orlando Florida
- May 11 Andrew Walter, American football player
Cory Monteith
May 11 Cory Monteith, Canadian actor and musician (Glee, Monte Carlo), born in Calgary, Alberta (d. 2013)
Cory Monteith
- May 13 Yoko Kumada, Japanese gravure idol
- May 13 Oguchi Onyewu, American footballer
- May 14 Ai Shibata, Japanese swimmer
- May 14 BeardyMan, English beatboxer
- May 15 Segundo Castillo, Ecuadorian footballer
- May 15 Alex Breckenridge, American actress
- May 15 Veronica Campbell-Brown, Jamaican athlete
- May 15 Tatsuya Fujiwara, Japanese actor
- May 15 Jessica Sutta, American dancer, singer and actress (The Pussycat Dolls)
- May 16 Łukasz Kubot, Polish tennis player
- May 16 Hanna Mariën, Belgian athlete
- May 16 Joo Ji Hoon, Korean actor and model
- May 17 Tony Parker, French-American basketball player
- May 18 Jason Brown, English-born footballer
- May 18 Eric West, American singer and actor
- May 19 Pål Steffen Andresen, Norwegian footballer
- May 19 Kevin Amankwaah, English footballer
- May 20 Petr Čech, Czech footballer
- May 20 Imran Farhat, Pakistani cricketer
- May 21 Ma'a Nonu, New Zealand rugby union player and All Black (2003-), born in Wellington, New Zealand
- May 22 Apolo Anton Ohno, American short track speed skater
- May 22 John Bobek, American actor
- May 23 Cyrill Gloor, Swiss footballer
- May 23 Malene Mortensen, Danish singer
- May 23 Tristan Prettyman, American musician
- May 24 Issah Ahmed, Ghana football player
- May 24 DaMarcus Beasley, American footballer
- May 25 Adam Boyd, English footballer
- May 25 Daniel Braaten, Norwegian footballer
- May 25 Ryan Gallant, American skateboarder
- May 26 Yoko Matsugane, Japanese model
- May 26 David Reed, British writer and comedian
- May 28 Alexa Davalos, American actress
- May 28 Jhonny Peralta, Dominican baseball player
- May 29 Ana Beatriz Barros, Brazilian model
- May 29 Joanne Borgella, American plus-sized model and singer
- May 29 Matt Macri, American baseball player
- May 30 Eddie Griffin, American basketball player (d. 2007)
- May 31 Jonathan Tucker, American actor