Ras Nouadhibou is a 60-kilometre (37 mi) peninsula or headland divided by the border between Mauritania and Western Sahara on the African coast of the Atlantic Ocean. It is internationally known as Cabo Blanco in Spanish or Cap Blanc in French.

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.