This is a complete list of the operas by the Italian composer Ottorino Respighi (1879–1936).
| Cat. | Year composed | Title | Genre | Subdivisions | Libretto | Première date | Place, theatre | Notes | |
|---|---|---|---|---|---|---|---|---|---|
| P 055 | 1905 | Re Enzo | opera comica | 3 acts | Alberto Donini | 12 March 1905 | Bologna, Teatro del Corso | ||
| P 076 | 1908 | Al mulino | opera | 2 acts | Alberto Donini | 1908 | Bologna | Unfinished. Première date is a private performance for the singer Margherita Durante | |
| P 094 | 1910 | Semirâma | poema tragico | 3 acts | Alessandro Cerè | 20 November 1910 | Bologna, Teatro Comunale | ||
| P 098b | 1913 | La Marquise Zabeth | opera | 2 acts | Unfinished. After Victor Hugo's Esca | ||||
| P 100 | 1914 | Marie Victoire | opera | 4 acts | Edmond Guiraud | 17 January 2004 | Rome, Teatro dell'Opera | Posthumous première | |
| P 134 | 1921 | La bella addormentata nel bosco | fiaba musicale | 3 acts | Gian Bistolfi | 13 April 1922 | Rome, Teatro Odescalchi | Version for marionette. See P 176 for standard opera version. After Charles Perrault's Sleeping Beauty | |
| P 137 | 1922 | Belfagor | commedia lirica | 1 prologue, 2 acts, 1 epilogue | Claudio Guastalla | 26 April 1923 | Milan, Teatro alla Scala | After a comedy by Ercole Luigi Morselli | |
| P 152 | 1927 | La campana sommersa | opera | 4 acts | Claudio Guastalla | 18 November 1927 | Hamburg, Stadttheater | After Gerhart Hauptmann's Die versunkene Glocke | |
| P 170 | 1931 | Maria egiziaca | mistero | 3 acts (quadri) | Claudio Guastalla | 16 March 1932 | New York City, Carnegie Hall | New York première was in concert form. Scenic première:Venice, Teatro Goldoni, 10 August 1932 | |
| P 175 | 1933 | La fiamma | melodramma | 3 acts | Claudio Guastalla | 23 January 1934 | Rome, Teatro dell’Opera | After Hans Wiers-Jenssen's The Witch | |
| P 176 | 1933 | La bella dormente nel bosco | fiaba musicale | 3 acts | Gian Bistolfi | 9 April 1934 | Turin, Teatro di Torino | Standard opera version. See P 134 for marionette version. After Charles Perrault's Sleeping Beauty | |
| P 180 | 1935 | Lucrezia | opera | 1 act (3 movements) | Claudio Guastalla | 24 February 1937 | Milan, Teatro alla Scala | After Shakespeare and Titus Livius |