Mitridate, re di Ponto (Mithridates, King of Pontus), K. 87 (74a), is an opera seria in three acts by the young Wolfgang Amadeus Mozart.

The libretto is by Vittorio Amedeo Cigna-Santi [it], after Giuseppe Parini's Italian translation of Jean Racine's play Mithridate.

The musicologist Daniel E. Freeman has demonstrated that it was composed with close reference to the opera La Nitteti by Josef Mysliveček.

[1] The latter was the opera being prepared for production in Bologna when Mozart met Mysliveček for the first time with his father in March 1770.

Mysliveček visited the Mozarts frequently in Bologna during the summer of 1770 while Wolfgang was working on Mitridate.

Mozart gained expertise in composition from his older friend and also incorporated some of his musical motifs into his own operatic setting.

Scene 3 Mitridate arrives on the shores of Nymphæaum with Princess Ismene, daughter of his ally the King of Parthia.

Mitridate tricks Aspasia into admitting her love for Sifare and swears revenge.

Before he dies he gives his blessing to Sifare and Aspasia and forgives Farnace, who now agrees to marry Ismene.

In 1901, Charles Malherbe located previously uncatalogued works of Mozart, including a soprano aria from the opera Mitridate, re di Ponto, written at age 14.