The following is a list of famous gay, lesbian, or bisexual composers of music from many genres.
- A: Ruth Anderson
- B: Samuel Barber -- Jean Barraque -- Eve Beglarian -- Leonard Bernstein -- Chester Biscardi -- Chris de Blasio -- Marc Blitzstein -- Konrad Boehmer -- Pierre Boulez -- Paul Bowles -- Benjamin Britten -- Sylvano Bussoti -- Madelyn Byrne
- C: John Cage -- Frederic Chopin -- David Conte -- Aaron Copland -- Marghreta Cordero -- John Corigliano -- Henry Cowell -- Conrad Cummings
- D: Peter Maxwell Davies -- David Del Tredici -- David Diamond -- Ani DiFranco
- E: Melissa Etheridge
- F: Wolfgang Fortner -- Stephen Foster -- Lori Freedman
- G: Karel Goeyvaerts -- Charles Tomlinson Griffes
- H: Reynaldo Hahn -- Lou Harrison -- Robert Helps -- Martin Hennessy -- Hans Werner Henze -- William Alden Hibbard -- Jennifer Higdon -- Lee Hoiby -- Jerry Hunt
- I: Janis Ian
- J: Elton John
- K: Paula Kimper -- Jonathan King
- L: k.d. lang -- John Lennon -- Marilyn Lerner -- Annea Lockwood -- Chris Lowe
- M: Madonna -- Robert Maggio -- Gian Carlo Menotti -- George Michael -- Linda Montano -- Steven Morrissey
- N: Me'shell N'Degeocello -- Alwin Nikolais
- O: Sinead O'Connor -- Pauline Oliveros
- P: Harry Partch -- Thomas Pasatieri -- Daniel Pinkham -- Cole Porter -- Francis Poulenc
- R: Sun Ra -- Ned Rorem
- S: Camille Saint-Saëns -- Fred Schneider -- Alexander Scriabin -- Zola Shaulis -- Dame Ethel Smyth -- Jimmy Somerville -- Stephen Sondheim -- Michael Stipe -- Conrad Susa -- Sylvester -- Karol Maciej Szymanowski
- T: Pyotr Ilyich Tchaikovsky -- Neil Tennant -- Virgil Thomson -- Nurit Tilles -- Michael Tippett -- 'Blue' Gene Tyranny
- W: Ben Weber -- Kaia Wilson -- Charles Wuorinen