The Great Orme is a limestone headland on the north coast of Wales, north-west of the town of Llandudno. Referred to as Cyngreawdr Fynydd by the 12th-century poet Gwalchmai ap Meilyr, its English name derives from the Old Norse word for sea serpent. The Little Orme, a smaller but very similar limestone headland, is on the eastern side of Llandudno Bay.

A headland, also known as a head, is a coastal landform, a point of land usually high and often with a sheer drop, that extends into a body of water. It is a type of promontory. A headland of considerable size often is called a cape. Headlands are characterised by high, breaking waves, rocky shores, intense erosion, and steep sea cliff.