The Temple of Saturn in the Roman Forum was a sacred ancient Roman temple dedicated to Saturn, the god of seed-sowing.

One of the oldest of the Roman Forum structures, the Temple of Saturn was originally built sometime between 501 BC and 497 BC and reconstructed in the fourth century BC. However, this second incarnation burned down and the Temple of Saturn was restored in 42 BC by Roman senator Lucius Munatius Plancus.

Used as the treasury and the seat of the financial overseers of the Roman Republic, the quaestors, the Temple of Saturn was also closely linked with the celebration of Saturnalia, during which slaves and masters would dine together.

Largely destroyed in the mid-fifteenth century, all that remains of the Temple of Saturn are six of its Ionic granite columns crowned with a frieze thought to date to approximately 30 BC.