- Colautti, Arturo
- Colbran, Isabella
- Coleridge-Taylor, Samuel
- Colette
- Collin, Matthäus von
- Colly
- Colman, Francis
- Coltellini, Marco
- Commerson, Jean-Louis-Auguste
- Congreve, William
- Conrat (Cohn), Hugo
- Constable, Henry
- Constantin, Marc
- Conti, Francesco Bartolomeo
- Contini, Domenico Filippo
- Converse, Charles Crozat
- Converse, Frederick Shepherd
- Coppée, François
- Corigliano, John
- Cormon, Eugène
- Cornago, Juan
- Corneille, Pierre
- Cornelius, Peter
- Costa y Nogueras, Vicente
- Costa, Michael
- Costello, Louisa Stuart
- Courmant, Louis de
- Cowen, Frederic Hymen
- Craigher de Jachelutta, Jakob Nikolaus
- Cranmer-Byng, Launcelot Alfred
- Cras, Jean
- Crémieux, Hector-Jonathan
- Crist, Bainbridge
- Croisset, Francis de
- Croly, George
- Cros, Charles
- Croze, Jean Louis
- Cruciger (Elisabeth Kreuzinger), Elisabeth
- Cruciger, Elisabeth
- Cruz, Antonio de la
- Cruz, San Juan de la
- Cuartero, M.
- Cui, César
- Cumellas i Ribó, Josep
- Cumming, Richard Jackson
- Curschmann, Karl Friedrich
- Czerny, Carl