The compositions of American composer Charles Ives (1874–1954) are mostly modern classical music. Ives was prolific, revised works multiple times, and left ambiguous fragments with no title or notes. A chronology of works is especially difficult because of missing and sometimes misleading dates; as Elliott Carter put it in 1939: “[Ives] has rewritten his works so many times, adding dissonances and polyrhythms, that it is impossible to tell just at what date the works assumed the surprising form we know now.”This list follows James B. Sinclair's A Descriptive Catalogue of the Music of Charles Ives. It does not include fragments or projected works.