Lucius Caesonius Ovinius Manlius Rufinianus Bassus (c. AD 227 – c. AD 300) was a Roman military officer and senator who was appointed suffect consul twice, in around AD 260 and 284.
Rufinianus Bassus was the son of Lucius Caesonius Lucillus Macer Rufinianus and a member of the 3rd century Patrician gens Caesonia. Although Bassus had a lengthy and illustrious career, most of the posts he held are not easily dateable. It is conjectured that his career began around AD 240-245, either in the reign of Gordian III or Philip the Arab, with his posting as a Triumvir capitalis (prison manager), and this was followed with his posting as sevir turmae deducendae (commander of one of the six squadrons of equites, who had the responsibility for organizing and financially running the city’s games). He was then the imperial candidate for the posts of Quaestor and Praetor.
His propraetorial career was relatively brief, with firstly an appointment as curator rei publicae of the town of Beneventum, followed by the curatorship of the town of Lavinium. Both these posts were probably occupied sometime during the 250s. Then in around AD 260, Rufinianus Bassus was chosen as consul suffectus, and by this time he had survived the many imperial crises which had plagued Rome throughout the early 250s.
Rufinianus Bassus’ proconsular career began with his appointment as Curator Albei Tiberis et cluacarum sacrae urbis (the official responsible for maintaining Rome’s sewers), a position which both his father and grandfather had held before him. This was probably followed by his being chosen to be Legatus proconsulis Africae dioeceseos Carthaginiensis (or the deputy governor of the province of Africa responsible for the area around Roman Carthage). This was followed by (or perhaps was held at the same time) his appointment as Curator of Colonia Carthaginensium.