Jean-Baptiste Philibert Willaumez (7 August 1763 – 17 May 1845) was a French sailor, Navy officer, and admiral of the First French Empire. Willaumez joined the French Navy at the age of 14, and proved a competent sailor. Having risen to the rank of pilot, he started studying navigation, attracting the attention of his superiors up to Louis XVI himself. He became an officer and served under Antoine Bruni d'Entrecasteaux in his expedition to rescue Lapérouse and explore the Indian Ocean and Oceania (including Tasmania, also known as Van Diemen's Land).