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. This treaty, which provided the Venetians with major trading concessions in exchange for their help in the wars against the Normans, would have a major impact on both the Empire and the Republic that would later dictate their histories for several centuries to come.