French explorer of the Sahara whose observations of the Tuareg people contributed to African ethnology; his explorations, which took him from Morocco to Tunisia through the region south of the Atlas Mountains, also were useful in the development of plans for French colonial expansion.

In his youth Duveyrier met Heinrich Barth (Barth, Heinrich), the famed German explorer-geographer of western Africa. When he was 19, having learned to speak Arabic, Duveyrier began a journey of nearly three years' duration through the northern Sahara. After returning to France he published Exploration du Sahara: Les Touâreg du nord (1864; “Exploration of the Sahara: The Tuareg of the North”).

On subsequent travels Duveyrier added considerably to the knowledge of the regions immediately to the south of the Atlas Mountains and explored the shallow salt lakes of Algeria and Tunisia. Duveyrier devoted special attention to the customs and speech of the Tuareg—pastoralists and brigands with a penchant for poetry—among whom he lived for months at a time. He also published La Tunisie (1881; “Tunisia”) as well as a work on the Sanūsī Muslims (1884).