Le Tréport lighthouse, Maritime navigation tower in Le Tréport, France.

Le Tréport lighthouse is a cylindrical tower 14 metres high, painted white with green bands, standing at the end of the west jetty of Le Tréport to mark the harbour entrance. Its lower section is white with a green band at the bottom and another below the glass lantern room, which has a dark domed roof and a weather vane. A low white building with a flat roof and two round windows adjoins it on a grey stone base.

A lighthouse is already documented at Le Tréport in a painting of Queen Victoria's 1843 visit to France, and it appears on a 1829 plan of the main lights of Seine-Inférieure kept at the Archives nationales. J. M. W. Turner sketched it in 1845, and Auguste Jugelet engraved its first version in 1846. The present tower was rebuilt in 1907, as postcards of the period show.

The lighthouse marks the entrance to the port of Le Tréport from the end of the west jetty. Its image appears in a painting of Queen Victoria's 1843 visit to France, in an 1845 sketch by J. M. W. Turner, and in an 1846 print by Auguste Jugelet showing its first version.

The lighthouse stands at the tip of the west jetty of Le Tréport, marking the harbour entrance; it is reached by following the jetty from the town side. Its light shows green with a ten-second cycle: two flashes of 0.4 seconds separated by 2.1 seconds of darkness, then 7.1 seconds of darkness.

The light's signature is a 10-second cycle: a 0.4-second flash, 2.1 seconds of darkness, a second 0.4-second flash, then 7.1 seconds of darkness. The tower itself is 14 metres tall, and the National Archives hold plans of the earlier pharillon from 1829 plus nine lighthouse plans drawn in 1835 and 1909.