Gabrielle Renaudot Flammarion (née Renaudot) (31 May 1877 – 28 October 1962) was a French astronomer. She worked at the Camille Flammarion Observatory at Juvisy-sur-Orge, France, and was General Secretary of the Société Astronomique de France. She published work in the changing surface features of Mars, the Great Red Spot on Jupiter, and observations of other planets, minor planets and variable stars and recorded astronomy-related activities and events in numerous articles.