- Oct 3 Stanisław Skrowaczewski, Polish-American conductor (Minnesota Orchestra, 1960-79) and composer (Passacaglia Immaginaria), born in Lwów, Second Polish Republic (now Lviv, Ukraine) (d. 2017)
- Oct 5 Glynis Johns, British stage and screen Tony Award-winning actress and singer (Mary Poppins; A Little Night Music - "Send In The Clowns"; The Sundowners), born in Pretoria, South Africa (d. 2024) [1]
- Oct 9 Helen Jones Woods, American jazz and swing trombone player (International Sweethearts of Rhythm), born in Meridian, Mississippi (d. 2020) [some sources give birthday as 14 November]
- Oct 9 Ronald Tremain, New Zealand composer, born in Feilding, New Zealand (d. 1998)
- Oct 10 Louis Gottlieb, American musician (The Limeliters), born in La Crescenta, California (d. 1996)
- Oct 16 Bert Kaempfert, German orchestra leader, songwriter ("Strangers in the Night"; "Danke Schoen"), and record producer (The Beatles first recordings), born in Hamburg (d. 1980)
- Oct 17 Barney Kessel, American jazz and session guitarist (The Wrecking Crew), born in Muskogee, Oklahoma (d. 2004)
- Oct 20 Robert Craft, American conductor, writer and friend of Stravinsky, born in Kingston, New York (d. 2015)
- Oct 23 Ned Rorem, American Pulitzer Prize-winning composer (Air Music: Ten Etudes for Orchestra; Evidence of Things Not Seen), and author (The Paris Diary), born in Richmond, Indiana (d. 2022) [1]
- Oct 25 Don Banks, Australian orchestral, jazz, and film score composer, born in South Melbourne, Australia (d. 1980)
- Oct 29 Dietrich Manicke, German composer, born in Wurzen, Saxony, Germany (d. 2013)
About October 1923
How Old? 100 years old
Generation: Greatest Generation
Leap Year: No
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