|Venerated in||Roman Catholic Church, Eastern Orthodox Church|
|Feast|| 18 April Roman Catholic Church
19 May Eastern Orthodox
Saint Calocerus was a second century Christian martyr. He was probably an officer in the Roman army under the Roman emperor Hadrian and was stationed in Brescia in the Lombardy, Italy. Other saints associated with him are Faustinus and Jovita. His feast day is May 19.