Le droit d'aînesse ("The Birthright") is an opéra bouffe, a form of operetta, in three acts by Francis Chassaigne with a French libretto by Eugène Leterrier and Albert Vanloo. It premiered in Paris in 1883. An English-language version titled Falka (after the name of the principal female character), with a libretto translated and adapted by Henry Brougham Farnie, was successfully premiered in London later that year followed by productions throughout the English-speaking world.