Georgian Bay Islands National Park, National park in Ontario, Canada

Georgian Bay Islands National Park consists of 63 small islands or parts of islands in Georgian Bay near Port Severn, Ontario, covering about 13.5 km². The islands combine exposed Canadian Shield rock and pines with hardwood forests found further south. Only Beausoleil Island, the largest, has trails, cabins, camping and docking facilities.

Georgian Bay Islands National Park was established in 1929, covering 63 small islands or parts of islands in Georgian Bay near Port Severn, Ontario. Flowerpot Island belonged to the park until Fathom Five National Marine Park was created. The park later became part of the Georgian Bay Littoral Biosphere Reserve.

Beausoleil Island, the park's largest, holds archaeological sites from Anishinaabe seasonal camps. The island also hosts heritage education programs, and its Cedar Spring campground has wheelchair-accessible and reservable campsites. The park lies within the Georgian Bay Littoral Biosphere Reserve.

The park can only be reached by boat; water taxis run from Honey Harbour near Port Severn. Camping, docking, trails and cabins exist only on Beausoleil Island, the largest island, where the Cedar Spring campground has wheelchair-accessible and reservable sites. Other islands have no facilities.

The park sits within one of the world's largest freshwater island systems, known locally as the Thirty Thousand Islands. This region displays an unusually rich variety of rock formations in a relatively compact area.