Fontana della Navicella, Renaissance fountain at Caelian Hill, Rome, Italy

Fontana della Navicella is a Renaissance fountain on Caelian Hill featuring a marble and travertine sculpture of a Roman galley ship. The boat has a decorative boar head at the prow and a castle motif at the stern, surrounded by marble columns linked together with wrought-iron chains.

The ship sculpture's origins are uncertain: it may have been an ex voto from the Castra Misenatium, sailors of the fleet at Misenum who operated the Colosseum's velarium, or from the Castra Peregrina, soldiers from distant provinces. Lost in the Middle Ages, its fragments were found near Santa Maria in Domnica in the early 16th century. Pope Leo X commissioned Andrea Sansovino to make a copy, placed before the church in 1518–1519. In 1931 it became a fountain.

The ship recalls the Castra Misenatium, the barracks of sailors from the fleet at Cape Miseno stationed on the Caelian; between shows they worked the velarium, the great awning of the Colosseum. Tradition holds they had a marble boat made as an offering to Isis, protector of seafarers; others ascribe it to soldiers of the Castra Peregrina thanking the goddess for surviving a shipwreck.

The fountain stands in the open on Via della Navicella, directly in front of the facade of Santa Maria in Domnica, on the Caelian Hill. It is reached on foot from the Colosseum or Circo Massimo and is visible at any hour from the street. The oval basin sits at street level, so the mosaic and the boar's head at the prow can be examined up close.

The oval basin at street level, added in 1931, carries a mosaic of fish and boats. The water leaves a single spout at the centre of the ship's deck and runs down the hull into the pool. A 2005 act of vandalism damaged the prow, which was later repaired.