Luigi Ciacchi (August 16, 1765 – December 17, 1865) was an Italian Cardinal and priest of Roman Curia.
Born in Pesaro, Marche, he was made Cardinal by Pope Gregory XVI.
He also took part in the conclave that elected Pope Pius IX.
He was 100 years old when died in Rome on 17 December 1865.
This article about an Italian Catholic cardinal is a stub.