Gaston Méry (1844 – 18 October 1896) was a French explorer. He was born in Algeria, son of one of the early settlers. After serving as a sailor and in the army, he assisted in surveys in Tunisia, then undertook three major expeditions into the Sahara in southern Algeria. He established friendly contact with the Tuareg people of the Kel Ajjer confederation, at the time considered unfriendly to the French, and mapped part of the route for a projected trans-Sahara railway to link Algeria to the Sudan. In the last years of his life he became a prosperous trader and real estate developer in Timbuktu.