Poemanenum or Poimanenon (Greek, Ancient (to 1453);: Ποιμάνινον) was a Greek town of ancient Mysia, south of Cyzicus and on the southwest of Lake Aphnitis. It belonged to the territory of Cyzicus was well fortified, and possessed a celebrated temple of Asclepius. Other writers call the town Poemanenus or Poimanenos (Ποιμανηνός)[1] or Poemanentus or Poimanentos (Ποιμάνεντος). Its inhabitants are called Poemaneni (Ποιμανηνοί) According to the Notitiae Episcopatuum, it became a bishopric. No longer a residential see, it remains a titular see of the Roman Catholic Church.[2] Nearby was fought the Battle of Poemanenum in 1223 or 1224.
Its site is located near Alexa in Asiatic Turkey.