Rosalie de Constant, (31 July 1758 Saint-Jean - 27 November 1834 Geneva) was a Swiss illustrator and naturalist.
She was the daughter of Samuel de Constant de Rebecque and Charlotte Pictet (herself a daughter of a professor of law at the Geneva Academy).
She left an important correspondence, notably with her cousin Benjamin Constant, as well as a painted herbarium with over 1,200 pages.