Gabriel II of Constantinople was an Orthodox prelate who served as the Ecumenical Patriarch in 1657. Born around 1550, he held various ecclesiastical roles, including serving as the Metropolitan of Ganos and Chora. Although his tenure as Patriarch lasted only one week due to his deposition by the Holy Synod, he later served as the administrator of the Metropolitan See of Prousa. His life ended in 1659 in Bursa, where he faced execution under the Ottoman Empire for his religious convictions.