The Siege of Negroponte was fought between the forces of the Ottoman Empire, led by Sultan Mehmed II in person, and the garrison of the Venetian colony of Negroponte (Chalcis), the capital of the Venetian possession of Euboea in Central Greece. It lasted for almost a month, and despite great Ottoman casualties ended in the capture of the city and the island of Euboea by the Ottomans.