Charles Alexandre Lesueur (1778 - 1846) was a French naturalist, artist and explorer.

In 1801 he travelled to Australia as artist on the expedition of Nicolas Baudin. With François Péron he took over the duties as naturalist after the death of the expedition's zoologist Maugé de Cely . Together they collected over 100,000 zoological specimens. Between 1815 and 1837 he lived in the United States. In 1845 he was appointed curator of the Musee d'Histoire Naturelle du Havre.