| L'oca del Cairo | |
|---|---|
| Opera buffa fragment by W. A. Mozart | |
 The composer, drawing by Dora Stock, 1789 | |
| Translation | The Goose of Cairo |
| Librettist | Giambattista Varesco |
| Language | Italian |
L'oca del Cairo (The Goose of Cairo or The Cairo Goose, K. 422) is an incomplete Italian opera buffa in three acts, begun by Wolfgang Amadeus Mozart in July 1783 but abandoned in October. The complete libretto by Giambattista Varesco remains. Mozart composed seven of the ten numbers of the first act, plus some recitative, as well a sketch for a further aria; the extant music amounts to about 45 minutes.
The autograph manuscript of the opera is preserved in the Berlin State Library.