Bois Blanc may refer to:
- One of two islands in the Great Lakes:
- Bois Blanc Island (Michigan)
- Bois Blanc Island (Ontario)
- Bois Blanc Township, Michigan, United States
- Bois Blanc Pines School District
- Bois Blanc Light, on the island in Michigan
- Bois Blanc Island Lighthouse and Blockhouse, National Historic Site of Canada, on the island in Ontario