Gabriella di Vergy is an opera seria in two acts by Gaetano Donizetti written in 1826 and revised in 1838, from a libretto by Andrea Leone Tottola, which was based on the tragedy Gabrielle de Vergy (1777) by Dormont De Belloy. Prior to that, the play was itself inspired by two French medieval legends, Le châtelain de Coucy et la dame de Fayel and Le Roman de la chastelaine de Vergy.