| Castus | |
|---|---|
| Slave leader | |
| Personal details | |
| Born | Unknown | 
| Died | 71 BC Lucania | 
| Nationality | Gallic | 
| Military service | |
| Battles/wars | Third Servile War | 
Castus was a Gallic slave, who together with the Thracian Spartacus, the fellow Gauls Crixus and Gannicus, alongside Oenomaus, was one of the leaders of rebellious slaves during the Third Servile War (73-71 BC). He was killed along with his co-commander Gannicus and their Gallic and Germanic followers by Roman forces under Marcus Licinius Crassus at the Battle of Cantenna in Lucania in 71 BC.