The Great Orme ( or ) is a prominent limestone headland on the north coast of Wales, next to the town of Llandudno. It is referred to as Cyngreawdr Fynydd in a poem by the 12th-century poet Gwalchmai ap Meilyr. Its English name derives from the Viking (Old Norse) word for sea serpent, which it is said to resemble. It is echoed by the Little Orme, a smaller but very similar limestone headland on the eastern side of Llandudno Bay in the parish of Llanrhos.