Lucia Migliaccio, suo jure 12th Duchess of Floridia (19 July 1770 – 26 April 1826) was the second wife of Ferdinand I of the Two Sicilies.

[citation needed] Lucia was a daughter of Don Vincenzo Migliaccio, 8th Duke of Floridia, and his wife, Donna Dorotea Borgia dei Marchesi del Casale, and inherited her father's dukedom.

Their marriage created a scandal as it took place less than three months from 8 September 1814, the death of his first wife Queen Maria Carolina of Austria.

By then, Ferdinand had already practically abdicated his power by naming his eldest son Prince Francis as his regent and delegating most decisions to him.

Ferdinand was restored to the throne of the Kingdom of Naples by right of his victory on the Battle of Tolentino (3 May 1815) over Joachim Murat.