Il Mitridate Eupatore (Mithridates Eupator) is an opera seria in five acts by the Italian composer Alessandro Scarlatti with a libretto by Girolamo Frigimelica Roberti.[1] It was first performed, with the composer conducting, at the Teatro San Giovanni Grisostomo, Venice, on 5 January 1707.[2] A failure at its premiere, Mitridate Eupatore is now considered one of the finest of Scarlatti's operas.