Cape Naturaliste Lighthouse, Maritime lighthouse in South West, Australia

Cape Naturaliste Lighthouse is a maritime lighthouse on the southwest coast of Australia, sitting on a high bluff above Geographe Bay with a cylindrical stone tower painted white and topped by a lantern room. The tower rises above the surrounding coastal scrub and offers a wide view of the bay and the Indian Ocean beyond.

The lighthouse was built in 1903 to warn ships away from the reefs that had already caused many wrecks along this stretch of coast. Its construction marked a turning point for safe navigation along a coastline that had long been difficult and dangerous to pass.

The tower still operates with its original first-order Fresnel lens, made by Chance Brothers of Birmingham and installed when the light was activated in 1904. Also displayed are the second-order Fresnel lens from the Jarman Island Light and the original Great Sandy Islands beacon, both brought from the Pilbara coast. The light shows two flashes every ten seconds.

Visitors can climb the tower to reach the viewing platform, though this involves a series of steps and may not suit everyone. The site sits at the tip of the cape and is best visited in the morning when the light falls across the bay most clearly.

The second-order Fresnel lens of the Jarman Island Light and the original Great Sandy Islands beacon are displayed at the lighthouse; both were first used on the Pilbara coast far to the north. The tower's own first-order lens by Chance Brothers of Birmingham is still in service.