Cassino is a comune in the province of Frosinone, central Italy, at the southern end of the region of Lazio, the last city of the Latin Valley.
Cassino is located at the foot of Monte Cairo near the confluence of the Gari and Liri rivers. The city is best known as the site of the Abbey of Montecassino and the Battle of Monte Cassino during World War II, which resulted in huge Allied and German casualties as well as the near total destruction of the town itself. It is also home to the University of Cassino.
Cassino has a population of 36,570 As of February 2017, making it the second largest town in the province.