Imelda de' Lambertazzi is a melodramma tragico or tragic opera in two acts by Gaetano Donizetti from a libretto by Andrea Leone Tottola, based on the tragedy Imelda by Gabriele Sperduti.

A concert performance was given on 10 March 2007 at the Queen Elizabeth Hall in London, conducted by Mark Elder, which was recorded by Opera Rara.

When Bonifacio proposes peace between the families, to be sealed by their marriage, he is met with the ire of Imelda's father and brother.

When Bonifacio attempts to see Imelda, he is stabbed with a poisoned dagger by her brother.

Imelda pleads for forgiveness from her father before expiring herself, having sucked the poison from Bonifacio's wound.