Lucius Munatius Plancus (c. 87 BC – c. 15 BC) was a Roman senator, consul in 42 BC, and censor in 22 BC with Paullus Aemilius Lepidus. He is one of the classic historical examples of men who have managed to survive very dangerous circumstances by constantly shifting their allegiances. Beginning his career under Julius Caesar, he allied with his assassin Decimus Junius Brutus in 44 BC, then with the Second Triumvirate in 43 BC, joining Mark Antony in 40 BC, and deserting him for Octavian in 32 BC. He also founded the cities of Augusta Raurica (now Augst) and Lugdunum (now Lyon). His tomb is still visible at Gaeta.