Gnaeus Servilius Caepio (born c. 184 BC) was a Roman politician who was consul in 141 BC; his colleague was Quintus Pompeius.^[1] He was the elder brother of one of his immediate successors in the consulship, Quintus Servilius Caepio, and the homonymous son of the consul of 169 BC.^[2]

During his consulship, he was "placed in charge of the investigation of [Lucius] Hostilius Tubulus [one of the praetors for 142 BC] by the senate", who had become "a byword for accepting bribes while presiding over the quaestio de sicariis".^[3] Tubulus was put on trial by Publius Mucius Scaevola who served as tribune of the plebs that year, resulting in Tubulus' departure into exile.^[4] It is unclear what province Gnaeus Caepio received after his consulship; it is possible he was defeated in Macedonia, but more likely stayed in Italy.^[2]

Some time around 138 BC, he joined his brother and some of the Caecilii Metelli in prosecuting his former consular colleague Pompeius for extortion.^[2] He, and his brother, were active lawyers in this period, as noted by Cicero.^[2] Münzer writes in the Realencyclopädie (1942) that Caepio, with a Quintus Metellus, suppressed a slave revolt at Minturnae and Sinuessa as part of an extraordinary command late in 133 BC;^[5] Broughton, however, in Magistrates of the Roman Republic (1952) notes no such command.^[6]

He was elected to the censorship of 125 BC with Lucius Cassius Longinus Ravilla. During their term, they constructed the Aqua Tepula.^[7]