The gens Tarpeia was a minor patrician family at ancient Rome. Only a few members of this gens are known, and the Tarpeii vanish from history after the early Republic. The Tarpeian Rock, a promontory on the Capitoline Hill, from which those condemned for treason were thrown to their deaths, is said to have been named after Tarpeia, the archetype of all Roman traitors. There seems to have been a senatorial family of this name in imperial times.