Louis Le Chatelier (20 February 1815 – 10 November 1873) was a French chemist and industrialist who developed a method for producing aluminium from bauxite in 1855.

His son was chemist Henry Louis Le Chatelier.

[1][2] Le Chatelier and his wife Louise Madeleine Élisabeth Durand (1827–1902) had seven children.

One was Alfred Le Chatelier (1855–1929), who joined the army.

[3] Alfred later became a ceramicist and then held the chair of Muslim sociology in the Collège de France for many years.