Fontana dei Quattro Fiumi (Fountain of the Four Rivers) is a fountain in the Piazza Navona in Rome, Italy. It was designed in 1651 by Gian Lorenzo Bernini for Pope Innocent X whose family palace, the Palazzo Pamphili, faced onto the piazza as did the church of Sant'Agnese in Agone of which Innocent was the sponsor.

Description
The base of the fountain is a basin from the centre of which travertine rocks rise to support four river gods and above them, a copy of an Egyptian obelisk surmounted with the Pamphili family emblem of a dove with an olive twig. Collectively, they represent four major rivers of the four continents through which papal authority had spread: the Nile representing Africa, the Danube representing Europe, the Ganges representing Asia, and the Río de la Plata representing the Americas.

Design
Bernini's design was selected in competition. The circumstances of his victory are described as follows in Filippo Baldinucci's The life of Cavaliere Bernini (1682):

So strong was the sinister influence of the rivals of Bernini on the mind of Innocent that when he planned to set up in Piazza Navona the great obelisk brought to Rome by the Emperor Caracalla, which had been buried for a long time at Capo di Bove for the adornment of a magnificent fountain, the Pope had designs made by the leading architects of Rome without an order for one to Bernini. Prince Niccolò Ludovisi, whose wife was niece to the pope, persuaded Bernini to prepare a model, and arrange for it to be secretly installed in a room in the Palazzo Pamphili that the Pope had to pass. When the meal was finished, seeing such a noble creation, he stopped almost in ecstasy. Being prince of the keenest judgment and the loftiest ideas, after admiring it, said: "This is a trick … It will be necessary to employ Bernini in spite of those who do not wish it, for he who desires not to use Bernini’s designs, must take care not to see them.

Public fountains in Rome served multiple purposes: first, they were highly needed sources of water for neighbors in the centuries prior to home plumbing. Second, they were monuments to the papal patrons. Earlier Bernini fountains had been the Fountain of the Triton in Piazza Barberini, the Fountain of the Moor in the southern end of Piazza Navona erected during the Barberini papacy, and the Neptune and Triton for Villa Peretti Montalto, whose statuary now resides at Victoria and Albert Museum in London.