Marcus Caeparius (died 63 BC) was a Roman politician who participated in the Catiline Conspiracy.[1]
He came from the Latin town of Tarracina and was preparing to travel to Apulia in order to incite a revolt among the slaves there when the conspiracy was discovered and its participants detained. Having heard about this, he attempted to flee from Rome,[2] but was apprehended during his escape and brought back to the city, where he was committed to the custody of the senator Gnaeus Terentius.[3] He was executed along with the other conspirators in the Tullianum by strangulation.[4]