- May 2 Steve Bays, Canadian rock musician (Hot Hot Heat - "In The Middle Of Nowhere"), and record producer, born in Vancouver, British Columbia
- May 3 Paul Banks, English-American vocalist (Interpol), born in Clacton-on-Sea, England
- May 5 Marcus Lewis, American jazz trombonist, composer, arranger, and bandleader, born in Augusta, Georgia
- May 5 Ola Gjeilo, Norwegian composer (Dreamweaver), born in Skui, Norway
- May 7 Nagash [Stian Hinderson], Norwegian black metal musician (Dimmu Borgir; Troll), born in Hamar, Norway
- May 8 Jang Woo Hyuk, Korean singer, rapper, and dancer (HOT; JTL), and actor, born in Daegu, South Korea
- May 11 Perttu Kivilaakso, Finnish cellist (Apocalyptica), born in Helsinki, Finland
- May 12 Aya Ishiguro, Japanese singer (formerly Morning Musume), born in Sopporo, Japan
- May 12 Wilfred [Le Bouthillier], Acadian singer, born in Tracadie-Sheila, New Brunswick
- May 15 Zoltan Bathory, Hungarian-born American musician and martial artist (Five Finger Death Punch), born in Szentendre, Hungary
- May 16 David Ford, English singer-songwriter (Songs for the Road), born in Dartford, Kent, England
- May 16 Jim Sturgess, British actor ("Across the Universe"; "The Way Back"), and singer-songwriter, born in Wandsworth, London, England
- May 23 Scott Raynor, American drummer (Blink-182, 1992-1998), born in Poway, California
- May 25 Adam Gontier, Canadian rock singer-songwriter (Three Days Grace), born in Peterborough, Ontario
- May 26 Jaheim [Hoagland], American R&B singer ("Put That Woman First"), born in New Brunswick, New Jersey
- May 26 Phil Elverum (né Elvrum), American singer-songwriter (The Microphones), born in Anacortes, Washington
- May 29 Per "Howlin' Pelle" Almqvist, Swedish musician (The Hives - "Hat To Say I Told You So"; "Walk Idiot, Walk"), born in Fagersta, Sweden
About May 1978
How Old? 45 or 46 years old
Generation: Generation X
Leap Year: No
Country Singers
Jazz Musicians
Opera Singers
Pop Stars
Rappers
Rockers