Germanus I of Constantinople was an 8th-century prelate who served as the Ecumenical Patriarch from 715 to 730. Born into a patrician family in Constantinople, he later served as the Bishop of Cyzicus before his elevation to the patriarchate. He is primarily remembered for his staunch opposition to the early iconoclastic movement, defending the use of sacred images against the imperial edicts of Leo III. His theological stances and writings have left a lasting mark on Christian tradition and liturgical understanding.