Môle de Guilvinec, Coastal lighthouse in Guilvinec, France.

The Guilvinec Mole Lighthouse is a masonry tower on the north mole of Guilvinec harbour in Finistère, France. The tower is cylindrical, with its lower half painted white and its upper half red, and it stands ten metres tall including the lantern and gallery. A white railing surrounds the balcony below the red lantern room, which has glass panes and a domed roof with a small weather vane. The lighthouse is attached to a white structure with two circular porthole windows.

A lighthouse on the north mole was first proposed at the municipal council meeting of 25 November 1906. Ministerial approval for construction was signed on 16 April 1907, with the project then estimated at 9,000 francs. The masonry tower was built in 1922 and has guided ships into the port since 17 March 1923.

Locals call it tour-tan an Dig in Breton, and it marks the narrow western entrance to the port at the tip of the north mole, which is reached on foot. It has flashed a single red light every four seconds since 1923, guiding boats past the channel into the fishing harbour.

The lighthouse is visible from the jetty and operates automatically today without a permanent keeper on site. Visitors can observe the red light most clearly during dusk and nighttime hours.

The tower is round, not rectangular: only its masonry base is rectangular. Its fixed red light, raised 15.20 metres above sea level, covers 14 degrees on each side of the channel and is visible nine miles along the axis but only six miles at ten degrees off it.