Gaius Octavius Appius Suetrius Sabinus (fl. 3rd century) was a Roman senator and military officer who was appointed consul twice, firstly in AD 214, and secondly in AD 240.
Originating from the town of Histonium, and the son of a senator, Suetrius Sabinus began his senatorial career under the reign of the emperor Septimius Severus. His first role was as Decemviri Stlitibus Iudicandis which he filled around AD 193 or 194. He then stood as one of the imperial candidates for the office of Quaestor in AD 201, before again standing for the office of Plebeian Tribune in AD 203. He was eventually elected to the office of praetor de liberalibus causis in AD 206.
Suetrius Sabinus was next sent as a Legatus to Africa before returning to Rome to act as curator viarum viae Latinae novae (or curator the Via Latina) from AD 209–210. His next posting was as iuridicus per Aemiliam et Liguriam, which he held from AD 210–211.
Suetrius Sabinus then served under the new emperor Caracalla during his campaign against the Alamanni from AD 211 to 213. At first he was a Legatus legionis of the Legio XXII Primigenia, serving in Germania Superior before he was promoted to the rank of praepositus vexillarii of Legio XI Claudia. By AD 213, he was the Comes in expeditione Germanica (or head of the expedition against the Germanic tribes) before being appointed for a three-month stint as imperial legate of the province of Raetia, serving from October to December 213.