Campo de' Fiori is a rectangular square south of Piazza Navona in Rome, Italy, at the border between rione Parione and rione Regola. It is diagonally southeast of the Palazzo della Cancelleria and one block northeast of the Palazzo Farnese. Campo de' Fiori, translated literally from Italian, means "field of flowers". The name dates to the Middle Ages when the area was a meadow.

Piazza Navona is a public open space in Rome, Italy. It is built on the site of the 1st century AD Stadium of Domitian and follows the form of the open space of the stadium in an elongated oval. The ancient Romans went there to watch the agones ("games"), and hence it was known as "Circus Agonalis". It is believed that over time the name changed to in avone to navone and eventually to navona.