Il castello di Kenilworth (or Elisabetta al castello di Kenilworth) is a melodramma serio or tragic opera in three acts by Gaetano Donizetti. Andrea Leone Tottola wrote the Italian libretto after Victor Hugo's play Amy Robsart (1828) and Eugene Scribe's play Leicester, in its turn after Scott's novel Kenilworth (1821). Daniel Auber composed another opera on the same subject, Leicester, ou Le château de Kenilworth (1823).
This opera represents Donizetti's first excursion into an aspect of English history and especially with the character of Elizabeth I, whose life he was to explore further in his operas Roberto Devereux and Maria Stuarda.
It received its first performance on the 6 July 1829 at the Teatro San Carlo, Naples.