Lennox Passage Provincial Park[1] is a small picnic and beach park on the shores of Lennox Passage on the North Shore of Isle Madame on Cape Breton Island, Nova Scotia, with 2 kilometres (1.2 mi) of shoreline, an operating lighthouse and site of a former post office (c. 1910), ferry terminal and two limestone quarries.

Visitors can picnic at tables scattered through a forest and open areas, enjoy the 2 kilometres (1.2 mi) of trails, or explore the working lighthouse.

The first lightkeeper was Daniel Clough, son of the merchant Nathaniel Cough, a recipient of one of the first Crown Land grants on Isle Madame.

In the late 1800s the lighthouse was flanked by docks for limestone and plaster quarries and quays for the Isle Madame farmers to bring their produce and livestock to market.

Due to erosion at the Grandique spit of land, the pole light was moved in 1900 and in 1906 a proper lighthouse was built.