Ancestry.com. Caltagirone, Catania, Italy, Civil Registration (Tribunale), 1861-1943 [database on-line]. Provo, UT, USA: Ancestry.com Operations, Inc., 2014.Original data: Italy, Catania, Caltagirone, Civil Registration (Tribunale), 1861-1941. Salt Lake City, Utah: FamilySearch, 2013.
This database includes civil registrations for births, marriages, and deaths from the Caltagirone Courthouse (Tribunale di Caltagirone).
You can learn more about this collection at the FamilySearch website.