Gaeta is a city and comune in the province of Latina, in Lazio, central Italy. Set on a promontory stretching towards the Gulf of Gaeta, it is 120 km from Rome and 80 km from Naples.

The town has played a conspicuous part in military history: its fortifications date back to Roman times, and it has several traces of the period, including the 1st-century mausoleum of the Roman general Lucius Munatius Plancus at the top of the Monte Orlando.

Gaeta's fortifications were extended and strengthened in the 15th century, especially throughout the history of the Kingdom of Naples (later the Two Sicilies). Present day Gaeta is a fishing and oil seaport, and a renowned tourist resort. NATO maintains a Naval base of operations at Gaeta.