- Columbia-Princeton Electronic Music Center3
- Composers Forum Concerts Collection158
- Composers String Quartet5
- Condon, Ruth1
- Conrad, Barbara Smith, 1937-20171
- Consoli, Marc-Antonio1
- Contemporary String Quartet1
- Converse, F. S. (Frederick Shepherd), 1871-19401
- Cook, James, 1728-17791
- Cooke, Francis Judd, 1910-19951
- Cope, David, 1941-1
- Copland, Aaron, 1900-19908
- Corey, Dean1
- Corner, Philip3
- Cortés, Ramiro, 1933-19841
- Corwin, Norman, 1910-20111
- Cory, Eleanor, 1943-1
- Cowan, Daniel1
- Cowell, Henry, 1897-19655
- Cowen, Daniel1
- Cowen, Marjorie (Violinist)1
- Cramer, Browning, 1944-1
- Crane, Stephen, 1871-19001
- Crane, Thomas (Composer)1
- Crane, Thomas (Musician)1
- Crapsey, Adelaide, 1878-19141
- Creston, Paul, 1906-19852
- Crumb, George1
- Crutcher, Ronald1
- Cummings, Conrad, 1948-1
- Cummings, E. E. (Edward Estlin), 1894-19623
- Cummiskey, Linda6
- Curtis-Smith, C. (Curtis), 1941-20141
- D'Angelo, Nicholas V1
- Dahl, Ingolf, 1912-19701
- Dahlberg, Ramona1
- Dahlman, Barbro1
- Dalgleish, James1
- Dallapiccola, Luigi, 1904-19751
- Daniel, Oliver5
- Darnell, Robert, 1921-20141
- Dashow, James, 1944-1
- Davenny, Ward1
- Davidovsky, Mario, 1934-20192
- Davis, David H1
- Davis, Eleanor2
- Davis, Peggy (Mezzo-soprano)1
- De Blasiis, Giovannina2
- De Gaetani, Jan3
- DeCavahlo, Virgil1
- Deak, Jon1
- Dechario, Joseph1
- Del Tredici, David2
- Delano, Jack1
- Dello Joio, Justin, 1954-1
- Dello Joio, Norman, 1913-20083
- Dengel, Eugenie2
- Deri, Otto1
- Des Marais, Paul1
- DesRoches, Raymond6