The Pactum Sicardi was a treaty signed on 4 July 836 between the Greek Duchy of Naples, including its satellite city-states of Sorrento and Amalfi, represented by Bishop John IV and Duke Andrew II, and the Lombard Prince of Benevento, Sicard. The treaty was an armistice ending a war between the Greek states and Benevento, during which the Byzantine Empire had not intervened on behalf of its subjects. It was supposed to last five years between the Lombard prince and the Neapolitans. It was a temporary armistice and was distinguished from other treaties such as Pactum Warmundi, which established temporary alliances.