The Cap Blanc Lighthouse (also known as the Ras Nouadhibou Lighthouse) is an active lighthouse located on Ras Nouadhibou (French: Cap Blanc) in Mauritania.

Constructed in 1910, it is today located only a few feet from Mauritania's border with Western Sahara.

A modern fiberglass light structure forms the front of the range.

The lighthouse serves as a landfall light for the port of Nouadhibou.

This article about a building or structure in Mauritania is a stub.