English: The Cap-des-Rosiers Lighthouse (French: Phare de Cap-des-Rosiers) is a lighthouse in Cap-des-Rosiers in Gaspé, Quebec, Canada.

The Cap-des-Rosiers Lighthouse is the tallest lighthouse in Canada, standing 34.1 metres (112 ft) tall. It is situated on the south shore of the Saint Lawrence River at the top of a steep cliff. It is located at the mouth of the river, where it flows into the Gulf of St. Lawrence. It is open for tours in the summer season.

A powerful light 136 feet above high water served as a major coastal aid for shipping headed int the estuary of the St. Lawrence from the Gulf.

L. Sautter & Cie. Constructeurs A Paris.

It was classified as a National Historic Site of Canada on June 11, 1973. It was listed as a Federal Heritage Building on March 31, 1994.