Louis Venant Gabriel Levieux Bailly de La Falaise (1866 in Luçon – 1910) was a French fencer.
He participated in Fencing at the 1900 Summer Olympics in Paris and won the gold medal in the sabre, defeating fellow French fencer Henri Masson in the final.
He also participated in Fencing at the 1908 Summer Olympics but was beaten in the final round, finishing in last place.
By his wife, the former Henriette Hennessy, he had four children:
James Henry Le Bailly de La Falaise, 1898–1972), who married American movie stars Gloria Swanson and Constance Bennett
Alain Le Bailly de La Falaise, (1905–1977), first husband of model Maxime de la Falaise and father of fashion muse/designer Loulou de la Falaise
Richard Le Bailly de La Falaise, (1910–1945)