Xenophon Paionidis was a Greek architect from Chalkidiki (Fourka), notable for his works in the city of Thessaloniki. Among his works are the "Villa Jeborga/Salem", "Hafiz Bey mansion" (1879), Papafeio Orphanage (1894), Ioannidis civil school (1900), Nedelkos clinic (1909), Nedelkos building (1924), "Villa Mordoch" (1905), Hotel Augustos (1923), the old Post Office "Stoa Pelosof" (1924), and others.