Bois Blanc Light can refer to one of five lighthouses erected on Bois Blanc Island, Michigan, in Lake Huron. Two of the lighthouses are currently standing. The lighthouse and surrounding property are privately owned and closed to the public.
The original structure, built in 1829, was the second lighthouse constructed on Lake Huron. Due to rising water levels, the lighthouse became unstable, and eventually collapsed on December 9, 1837. The lighthouse was rebuilt in the summer of 1839, further inland from the original structure. Eventually this structure also became dilapidated, and a new lighthouse was constructed in 1867.
This light was decommissioned in 1924 and boarded up, being replaced by an automated acetylene light atop a 35-foot (11 m) tall black steel skeleton tower to the east of the old light. The old station property and buildings were sold to Earl J. Coffey on August 24, 1925, and some time thereafter the steel skeletal tower was replaced by the currently operational cylindrical D9 tower with solar-powered 7.9-inch (200 mm) acrylic optic, which is basically a tube with a light on the top. It is functional, but spartan.