Louis Athanase Chaubard (18 March 1781 in Agen – 1854) was a French botanist and naturalist.
With Jean Baptiste Bory de Saint-Vincent (1778-1846), he was co-author of Nouvelle Flore du Péloponèse et des Cyclades (New flora of the Pelopennesus and the Cyclades). He also made contributions to Jean Florimond Boudon de Saint-Amans' Flore agenaise ou description méthodique des plantes observées dans le département de Lot-et-Garonne, etc. Other noted works by Chaubard are:
The plant genus Chaubardia (family Orchidaceae) is named in his honor.