The Byzantine–Venetian treaty of 1082 was a trade and defence pact signed between the Byzantine Empire and the Republic of Venice, in the form of an imperial chrysobull or golden bull, issued by Emperor Alexios I Komnenos.

According to the treaty, the Byzantines would allow the Venetians the right to trade throughout the empire without the imposition of taxes.

[1] Finally, the Venetians were granted their own district within Byzantium, with shops, a church, and a bakery,[3] which could be compared to the concessions of 19th century colonialism.

However, the Venetians gains largely overweighed those of the Romans as they reaped great benefits from the new trade advantages they enjoyed by the treaty.

This stifled the empire's power of recuperation and ultimately started its terminal decline.