Gaius Calpetanus Rantius Sedatus was a Romansenator, who held a number of offices in the imperial service. He was suffect consul in the nundinium of March to April 47 with Hordeonius Flaccus as his colleague.[1] He is known primarily from inscriptions.
His cursus honorum is known only piecemeal. The first known office Sedatus held was curator tabullarium publicorum in 45, a post reserved for senators of praetorian status.[2] After he was suffect consul, the emperor Claudius appointed him governor of the province of Dalmatia.
His father was probably Gaius Calpetanus C.f. Statius Rufus.[3]Gaius Calpetanus Rantius Quirinalis Valerius Festus, suffect consul in 71, has been identified as his adopted son.[4]