- Cole, Robert (Bassoonist)1
- Coleman, Ornette2
- Coleta, Harold1
- Colgrass, Michael1
- Collins, Howard (Guitarist)1
- Collins, Judy, 1939-2
- Coltrane, John, 1926-19671
- Columbia University9
- Columbia University Chamber Orchestra1
- Columbia University Choir1
- Columbia University Orchestra29
- Columbia University Singers1
- Columbia University. Choir1
- Columbia University. Glee Club1
- Columbia-Princeton Electronic Music Center7
- Columbus Philharmonic Orchestra1
- Composers Forum Concerts Collection158
- Composers String Quartet5
- Conant, Theodore Richards, 1926-2015136
- Conde, Carlos1
- Condon, Ruth1
- Condé, Maryse3
- Cone, Edward T.2
- Cone, James H.35
- Conlon, James, 1950-1
- Conrad, Barbara Smith, 1937-20171
- Conrad, William, 1920-19941
- Consoli, Marc-Antonio1
- Contemporary String Quartet1
- Converse, F. S. (Frederick Shepherd), 1871-19401
- Cook, James, 1728-17791
- Cooke, Francis Judd, 1910-19951
- Coolidge Auditorium (Library of Congress)1
- Cope, David, 1941-1
- Coperario, John, approximately 1570-16261
- Copland, Aaron, 1900-19908
- Corelli, Arcangelo, 1653-17132
- Corey, Dean1
- Cormier, Richard1
- Cornell Symphony Orchestra1
- Corner, Philip3
- Cortés, Ramiro, 1933-19842
- Corwin, Norman, 1910-20111
- Cory, Eleanor, 1943-1
- Country Joe and the Fish1
- Cowan, Daniel1
- Cowell, Henry, 1897-19656
- 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
- Crecquillon, Thomas, -1557?2
- Creedence Clearwater Revival (Musical group)1
- Creston, Paul, 1906-19852
- Crofut, Bill2
- Crosby, Stills & Nash2
- Crowfoot, Bill1