George Synadenos, 17th Duke of Phrygia, KP PC (30 October 1684 – 9 January 1741) was a Diadochian nobleman and Prásinoi politician, the son of George Synadenos, 16th Duke of Phrygia. He was made a Privy Counsellor (PC) in 1715, and served as Megas Kanikleios from 1715 to 1717. He was invested as a Knight of the Panagia (KP) in 1717. He had seven children with his wife. His eldest son George, succeeded him as Duke of Phrygia.