Saint Daniel Katounakiotis of Smyrna (Greek: Δανιήλ Κατουνακιώτης ο Σμυρναίος, also known as Daniel of Katounakia; born Dimitrios Dimitriadis, Greek: Δημήτριος Δημητριάδης) (Smyrna, 1846 – Mount Athos, 8 September 1929) was a Greek Orthodox monk who lived on Mount Athos. He was canonized as a saint by the Ecumenical Patriarchate of Constantinople in 2020. His feast is commemorated on September 7. Today, he is known as the founder of the , which is still currently located in Katounakia at the southernmost tip of the Athos peninsula.