French Island National Park, Nature reserve in Western Port, Victoria, Australia.

French Island National Park is a nature reserve located on an island in Western Port Bay, in the state of Victoria, Australia. The island features rocky shores, sandy beaches, mangrove areas, and wetlands that shift with the tides throughout the year.

French Island lies within the traditional lands of the Boon Wurrung and Bunurong peoples. In 1802 crew members of a French expedition ship under Baudin visited the island; European settlement only began in 1842. From the 1890s chicory was grown here for about 60 years, and the national park was established in June 1988, covering 11,100 hectares, about 70% of the island.

French Island lies within the traditional country of the Boon Wurrung and Bunurong peoples. The name recalls the Baudin expedition, whose crew members came ashore in 1802; the first European settlement followed only in 1842. From the 1890s chicory was grown on the island for about sixty years, a crop still visible in the old paddocks.

The island can only be reached by ferry from the mainland, so checking departure times in advance is important. Once there, services and shops are very limited, so bring water and supplies for the day.

The island holds one of the largest koala populations in Victoria, with the animals living largely undisturbed across the land. Alongside this, over 580 native plant species grow here, including around 100 types of orchids, making it a surprising destination for those interested in wildflowers.