Giulia Carafa Cantelmo Stuart, duchess di Cassano (1755–1841) was an Italian courtier.
She served as lady-in-waiting to queen Maria Carolina of Austria was at one point courted by king Ferdinand I of the Two Sicilies, though she reportedly refused him.
Her son Gennaro Serra, Duke of Cassano was one of the leaders of the Parthenopean Republic.
During the days of the republic, Giulia Carafa and her sister became known in Naples for their efforts in collecting funds to help the wounded and the sick of the republic, and was named by Eleonora Pimentel Fonseca as Madri della Patria ('Mothers of the Nation').
Giulia Carafa returned to Naples in 1804, but her mental health deteriorated to insanity.