The Appian Way Regional Park is the second-largest urban park of Europe, after Losiny Ostrov National Park in Moscow. It is a protected area of around 4580 hectares, established by the Italian region of Latium. It falls primarily within the territory of Rome but parts also extend into the neighbouring towns of Ciampino and Marino.

The Appian Way is one of the earliest and strategically most important Roman roads of the ancient republic. It connected Rome to Brindisi, in southeast Italy. Its importance is indicated by its common name, recorded by Statius, of Appia longarum... regina viarum . The road is named after Appius Claudius Caecus, the Roman censor who, during the Samnite Wars, began and completed the first section as a military road to the south in 312 BC.