(Italian: Giuseppe Maria Tomasi di Lampedusa)(12 September 1649 – 1 January 1713), was an Italian Theatine Catholic priest, scholar, reformer and cardinal.
His scholarship was a significant source of the reforms in the liturgy of the Roman Catholic Church during the 20th century.
He was beatified by Pope Pius VII in 1803, and was canonized by Pope John Paul II in 1986.