| Gattung | Titel | Komponist | Komponiert |
|---|
| Operette | Cagliostro in Wien | Johann (Sohn) Strauss | 1874-75 |
| Musical | Candide | Leonard Bernstein | 1956, rev. 1974 und 1989 |
| Oper | Caritea, regina di Spagna, ossia La morte di Don Alfonso, re di Portogallo | Giuseppe Saverio Mercadante | 1826 |
| Oper | Carlo di Borgogna | Giovanni Pacini | 1835 |
| Oper | Carmen | Georges Bizet | 1873-74 |
| Oper | Caterina Cornaro | Gaetano Donizetti | 1842-43, rev. 1845 |
| Oper | Cato in Utica | Johann Adolph Hasse | 1731 |
| Oper | Catone in Utica | Johann Adolph Hasse | 1731 |
| Oper | Cavalleria Rusticana | Pietro Mascagni | 1890 |
| Oper | Cecchina, or The Good-Natured Girl | Niccolò Piccinni | 1759-60 |
| Oper | Cendrillon | Nicolò Isouard | 1810 |
| Oper | Cendrillon ou la Bonté triomphante | Gioacchino Rossini | 1816-17 |
| Oper | Čert a Káča | Antonín Dvořák | 1898-99 |
| Oper | Čertova stěna | Bedřich Smetana | 1879-82 |
| Oper | Chowanschtschina [Хованщина] | Modest Petrowitsch Mussorgski | 1872-80 |
| Oper | Christoph Columbus | Darius Milhaud | 1928, rev. 1969/70 |
| Oper | Christophe Colomb | Darius Milhaud | 1928, rev. 1969/70 |
| Oper | Christopherus Columbus | Darius Milhaud | 1928, rev. 1969/70 |
| Oper | Chushingura | Shigeaki Saegusa | 1997 |
| Oper | Cinderella | Nicolò Isouard | 1810 |
| Oper | Cinderella, or Goodness Triumphant | Gioacchino Rossini | 1816-17 |
| Oper | Circe, the Sorceress | Pasquale Anfossi | 1788 |
| Oper | Ciro in Babilonia ossia La caduta di Baldassare | Gioacchino Rossini | 1812 |
| Oper | Clari | Jacques Fromental Halévy | 1828 |
| Oper | Cleofide | Johann Adolph Hasse | 1731 |
| Oper | Cleopatra e Cesare | Carl Heinrich Graun | 1742 |
| Oper | Cleopatra und Cäsar | Carl Heinrich Graun | 1742 |
| Oper | Cleophis | Johann Adolph Hasse | 1731 |
| Oper | Clotilde | Carlo Coccia | 1815 |
| Oper | Colas Breugnon | Dmitri Borissowitsch Kabalewski | 1936-38, rev. 1953 und 1968 |
| Oper | Colas Breugnon or The Craftsman of Clamecy | Dmitri Borissowitsch Kabalewski | 1936-38, rev. 1953 und 1968 |
| Oper | Comédie sur le pont | Bohuslav Martinů | 1935 |
| Oper | Comedy On The Bridge | Bohuslav Martinů | 1935 |
| Oper | Conchita | Riccardo Zandonai | 1909-11 |
| Oper | Corradino | Carlo Galante | 1991 |
| Oper | Corrado d'Altamura | Federico Ricci | 1841 |
| Oper | Così fan tutte | Wolfgang Amadeus Mozart | 1789/90 |
| Oper | Croesus | Reinhard Keiser | 1710, rev. 1730 |
| Singspiel | Cud mniemany, czyli Krakowiacy i Górale | Jan Stefani | 1794 |
| Oper | Cyrano de Bergerac | Eino Tamberg | 1974 |
| Oper | Cyrus à Babylone ou la Chute de Balthazar | Gioacchino Rossini | 1812 |
| Oper | Cyrus in Babylon, or The Downfall of Belshazzar | Gioacchino Rossini | 1812 |
| Oper | Cyrus in Babylonien | Gioacchino Rossini | 1812 |