Swan Island is a picturesque 1.4 km² sand barrier island located off the coast of Queenscliff in Victoria, Australia. It plays a significant role in separating Swan Bay from Port Phillip Bay, alongside Duck Island and Edwards Point spit. The island is home to the Queenscliff Golf Club and a Defence training facility, although access is restricted to authorized personnel and members of certain clubs. The island's natural beauty includes coastal scrub, woodlands, and extensive saltmarsh areas, making it a haven for birdlife like the critically endangered orange-bellied parrot. Swan Bay, adjacent to the island, is renowned for its diverse bird species and protected wildlife habitats.
Visitors can explore nearby attractions in Queenscliff, but direct access to Swan Island is limited due to its restricted usage. The surrounding area offers serene landscapes and rich biodiversity, making it a unique destination for nature enthusiasts.
Historically, the island has been used for military purposes and still maintains this legacy today.