"Poro, re dell'Indie" (HWV 28) is an opera seria in three acts by George Frideric Handel. The Italian-language libretto was adapted from Alessandro nell'Indie by Metastasio, and based on Alexander the Great's encounter with King Porus in 326 BC. The libretto had already been set to music by Leonardo Vinci in 1729 and by Antonio Vivaldi among others and was used as the text for more than sixty operas throughout the 18th century. The opera was first given at the King's Theatre in London on 2 February 1731 and on 15 further occasions. A run of 16 performances was a mark of success for the time as is the fact that the work was revived on 23 December 1731, and again in a revised form on 8 December 1736. It was also given in Hamburg and Brunswick.