Stephen II of Constantinople was an Eastern Orthodox priest who served as the Ecumenical Patriarch from 925 until his death in 928. Born around 850 in the Amasya Province of the Byzantine Empire, he was appointed to the high office by Emperor Romanos I Lekapenos. Historical accounts suggest his appointment served as a temporary measure, intended to hold the position until the emperor's son, Theophylact, reached an appropriate age to take over the leadership of the church.