| Calocaerus | |
|---|---|
| Usurper of the Roman Empire | |
| Reign | 333–334 |
| Predecessor | Constantine I |
| Successor | Constantine I |
| Born | ? |
| Died | 334 Tarsus, Cilicia |
| Dynasty | Constantinian |
Calocaerus (died 334) was a Roman usurper against Emperor Constantine I.
Calocaerus was Magister pecoris camelorum ("Lord of the sheep and camels") in Cyprus. In 333–334 he revolted, proclaiming himself Emperor. Constantine sent his half-brother, the Censor Flavius Dalmatius to quell the rebellion, and Calocaerus was defeated, and afterwards brought to Tarsus in Cilicia, where he was tried and executed.