I
- Jacques Ibert (1890–1962)
- Akira Ifukube (1916–2006)
- Ilayaraaja (born 1943)
- Márton Illés (born 1975)
- Andrew Imbrie (born 1921)
- Sigismondo d'India (c. 1582–1629)
- Vincent d'Indy (1851–1931)
- Marc'Antonio Ingegneri (1535/1536–1592)
- Mikhail Ippolitov-Ivanov (1859–1935)
- John Ireland (1879–1962)
- Juan Francés de Iribarren (1699–1767)
- Miguel de Irízar (1635–1684)
- Heinrich Isaac (c. 1450/1455–1517)
- Nicolas Isouard (1775–1818)
- Jānis Ivanovs (1906–1983)
- Volodymyr Ivasiuk (1949–1979)
- Charles Ives (1874–1954)
- Simon Ives (1600–1662)
- Jean Eichelberger Ivey (1923–2010)
Read more about this topic: List Of Composers By Name