- Oct 1 Brian Asawa, Japanese-American countertenor, born in Los Angeles, California (d. 2016)
- Oct 3 Frank Hannon, American blues and rock guitarist (Tesla - The Great Radio Controversy), born in Sacramento, California
- Oct 7 Marco Beltrami, Italian-American film composer (3:10 To Yuma; The Hurt Locker; Logan), born in Long Island, New York
- Oct 10 Kevin Paige, American vocalist ("Don't Shut Me Out"), born in Memphis, Tennessee
- Oct 12 Brian Kennedy, Northern Irish musician, songwriter, and author, born in Belfast, Northern Ireland
- Oct 12 Harry Allen, American jazz tenor saxophonist, born in Washington, D.C.
- Oct 13 Eugene Alcalay, Romanian concert pianist, composer, and educator, born in Bucharest, Romania (d. 2019)
- Oct 15 Bill Charlap, American jazz pianist (Phil Woods; Tony Bennett; Sandy Stewart), and educator, born in New York City
- Oct 15 David Stead, British pop drummer (The Beautiful South - "A Little Time"), born in Huddersfield, Yorkshire, England
- Oct 15 Dougie Vipond, Scottish pop drummer (Deacon Blue - "Real Gone Kid") and broadcaster (BBC), born in Elderslie, Scotland
- Oct 20 Fred Coury, American glam rock drummer (Cinderella -"Heartbreak Station"; "Nobody's Fool"), born in Johnston, New York
- Oct 26 Masaharu Iwata, Japanese video game composer, born in Tokyo
- Oct 31 Ad-Rock [Adam Horovitz], American rocker (Beastie Boys - "Fight for Your Right"), born in New York City
- Oct 31 Annabella Lwin [Myant Myant Aye], Anglo-Burmese singer (Bow Wow Wow - "I Want Candy"), born in Rangoon, Burma
- Oct 31 Jon Wurster, American session and touring drummer (Superchunk; The Mountain Goats; Bob Mould), and comedy writer, born in Sellersville, Pennsylvania
About October 1966
How Old? 57 years old
Generation: Generation X
Leap Year: No
Country Singers
Jazz Singers
Opera Singers
Pop Singers
Rappers
Rock Singers