Fontana Liri is a comune (municipality) in the Province of Frosinone in the Italian region Lazio, located about 90 kilometres (56 mi) southeast of Rome and about 15 kilometres (9 mi) east of Frosinone.

Fontana Liri is in the Latin Valley.

Fontana Liri borders the following municipalities: Arce, Arpino, Monte San Giovanni Campano, Rocca d'Arce, Santopadre.

Southern Latian dialect is spoken in the city.

This Lazio location article is a stub.