Lars Porsena was an Etruscan king (lar) known for his war against the city of Rome. He ruled over the city of Clusium. There are no established dates for his rule, but Roman sources often place the war at around 508 BC.

The Roman–Etruscan Wars, also known as the Etruscan Wars or the Etruscan–Roman Wars, were a series of wars fought between ancient Rome and the Etruscans. Information about many of the wars is limited, particularly those in the early parts of Rome's history, and in large part is known from ancient texts alone. The conquest of Etruria was completed in 265–264 BC.