The Kapudan Pasha (, modern: Kaptan Paşa), was the commander-in-chief of the navy of the Ottoman Empire. He was also known as the Kapudan-ı Derya (Ottoman: قپودان دریا, modern: Kaptan-ı Derya, "Captain of the Sea"). Typically, he was based at Galata and Gallipoli during the winter and charged with annual sailings during the summer months. The title of Kapudan Pasha itself is only attested from 1567 onwards; earlier designations for the supreme commander of the fleet include Derya Bey ("bey of the sea") and Re'is Kapudan ("head captain").