The Cap-au-Saumon lighthouse is a lighthouse on the St. Lawrence River in Quebec. It is located at Saint-Siméon, in the region of Charlevoix, midway between Port-au-Persil and Port-Saumon.
Commissioned in 1894, the Cap-au-Saumon lighthouse is an octagonal high tower of . It is surrounded by several outbuildings, including the lighthouse keeper's house. The lighthouse is perched on an escarpment of dominating the river. It is accessible on foot by a path of .
The Carré family has provided three successive caretakers for the Cap-au-Saumon lighthouse:
The lighthouse remained abandoned for about thirty years before being restored carefully. It is now rented by the week.