The siege of Melite was the capture of the Byzantine city of Melite by an invading Aghlabid army in 870 AD. The siege was initially led by Halaf al-Hādim, a renowned engineer, but he was killed and replaced by Sawāda Ibn Muḥammad. The city withstood the siege for some weeks or months, but it ultimately fell to the invaders, and its inhabitants were massacred and the city was sacked.

Melite or Melita (Latin) was an ancient city located on the site of present-day Mdina and Rabat, Malta. It started out as a Bronze Age settlement, which developed into a city called Ann under the Phoenicians and became the administrative centre of the island. The city fell to the Roman Republic in 218 BC, and it remained part of the Roman and later the Byzantine Empire until 870 AD, when it was captured and destroyed by the Aghlabids. The city was then rebuilt and renamed Medina, giving rise to the present name Mdina. It remained Malta's capital city until 1530.