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.

The story had already been the subject of an opera by Michele Carafa (1816) and had previously been used by Johann Simon Mayr (Raul di Créqui, Milan, 1809), Francesco Morlacchi (Raoul de Créqui, Dresden, 1811), and Carlo Coccia (Fayel, Florence, 1817).

For the revised version, Donizetti revisited Gabriella di Vergy and incorporated into the opera parts of Ugo, conte di Parigi (Milan 1832), Rosmonda d'Inghilterra (Florence 1834) and Maria de Rudenz (Venice 1838).

However, the score was a rifacimento (re-doing), compiled by Giuseppe Puzone (who had been Donizetti's student) and Paolo Serrao.

Gabriella has married Fayel under pressure from her father and the reported death of Raoul, the man she really loves on his return from the Crusades.