Giovanni Battista Casali del Drago

Giovanni Battista Casali del Drago (30 January 1838 – 17 March 1908) was an Italian cardinal and member of the Italian noble family. He was a second cousin of the Prince del Drago.

He came from an aristocratic family and was related to several cardinals including Antonio Casali, Savo Millini and Mario Millini. He graduated from the Roman Seminary, where he completed a doctorate in utroque iuris (civil and canon law).

He was ordained a priest in 1860 and went on to become a canon of the Patriarchal Lateran Basilica and private chamberlain de numero participantium of Pope Blessed Pius IX. He later became a canon of the Patriarchal Vatican Basilica and a prelate.

On November 29, 1895, he was appointed titular Latin Patriarch of Constantinople with residence in the Roman Curia. He was consecrated by Mariano Rampolla del Tindaro, the Cardinal Secretary of State of the Holy See. In June 1899 he was created cardinal-priest. From 1901 to 1902 he was a Camerlengo of the Sacred College of Cardinals. He took part in the conclave of 1903.

He is buried in Campo Verano.