Lucius Marcius Censorinus (consul 39 BC)

Lucius Marcius Censorinus was a consul of the Roman Republic in 39 BC, during the Second Triumvirate. He and his colleague Gaius Calvisius Sabinus had been the only two senators who tried to defend Julius Caesar when he was assassinated on the Ides of March in 44 BC, and their consulship under the triumvirate was a recognition of their loyalty.

Marcius Censorinus was proconsul of Macedonia and Achaea 42–40 BC. He and a Fabius Maximus were the last proconsuls honored abroad with the title "savior and founder" and with a festival bearing their names before the establishment of the imperial monarchy under Augustus. Following the civil wars of the 40s, Censorinus took possession of Cicero's beloved house on the Palatine.

The Marcii Censorini were a branch of the plebeian gens Marcia, but Ronald Syme notes their "ancestral prestige, barely conceding precedence to the patriciate." They had been supporters of Gaius Marius and were consistent populares throughout the civil wars of the 80s and 40s–30s. Lucius's father, who had the same name, was one of Sulla's enemies in 88 BC.