Mount Lesueur is a near-circular, flat-topped mesa located 21 kilometres (13 mi) from Jurien Bay in Western Australia.

Mount Lesueur was first sighted and named by Europeans as the French ship the Naturaliste sailed past Jurien Bay on its voyage up the Western Australian coast.

[2] It was named in honour of Charles Alexander Lesueur, a natural history artist on board the ship.

The next recorded sighting was by Captain George Grey, who led a small party through the area in 1839 after they were shipwrecked near Kalbarri.

[2] Mount Lesueur has an extremely high level of plant biodiversity, making it of immense research and conservation importance to botanists.