Composers
ComposerBirthDeath
- Norah Chambers
- Noraml Dello Joio 1913
- Norman Luboff 1917 1987
- Ola Gjeilo 1978
- Olivier Messiaen 1908 1992
- Orazio Vecchi 1550 1605
- Oscar Escalada
- Otmar Mácha 1922
- Pablo Ortiz 1958
- Pascale Denis
- Patricia Hennings 1950 2001
- Pau (Pablo) Casals 1876 1973
- Paul Caldwell & Sean Ivory
- Paul Chihara
- Pavel Chesnokov 1877 1944
- Pekka Kostiainen 1944
- Peter Knell 1970
- Peter Maxwell Davies 1934
- Peter Tryggvi Bjerring (Peter Berring) 1954
- Peter Wilhousky 1902 1978
- Philip Koutev 1903 1982
- Péter Tóth 1965
- Péter Zombola 1983
- R. Murray Schafer 1933
- R.R. Terry 1865 1938
- Ralph H. Prime
- Ralph Vaughan Williams 1872 1958
- Ramona Luengen 1960
- Randall Thompson 1899 1984
- Rebecca Clarke 1886 1979
- Richard Oswin 1957
- Rick Kvistad
- Robert Schumann 1810 1856
- Robert Stern 1934
- Ron Jeffers 1943 2017
- Ross Edwards 1943
- Ross Whitney 1954
- Ruth Watson Henderson
- Samuel Adler 1928
- Samuel Barber 1910 1981
- Sandra Milliken 1961
- Saunder Choi 1988
- Sergei Rachmaninoff 1873 1943
- Shawn Kirchner
- Sheena Phillips 1958
- Sister Mary Hazzard
- Srul Irving Glick 1934
- St. Bernard of Clairvaux 1090 1152
- Stacy Garrop 1969
- Stephen Hatfield 1956