Burnside Island lies on the eastern side of Exmouth Gulf on the coast of Western Australia.

The low, straight, narrow 2 km long island faces west-northwest into the gulf.

It consists of the narrow high tide beach (WA 1637) backed by low scarped calcarenite bluffs, and a low grassy ridge widening to 200 m towards the northern end of the island.

[1] Burnside Island is a popular bird watching and fishing location.

Burnside Island was named while the Royal Australian Navy was surveying the area in 1954.