His All-Holiness Dionysius II was the Patriarch of Constantinople during the middle of the sixteenth century. He served as patriarch from 1546 to 1555. The date of Dionysius' birth is not known. He was born in the Galata area of Constantinople and was consecrated to the episcopate by Patriarch Theoliptos. He was esteemed to be well educated. Before he was elected to the patriarchal throne he was Metropolitan of Nicomedia. Dionysius was elected Patriarch in 1546.