Cabo Frio (Cold Cape) is a Brazilian municipality in Rio de Janeiro state, founded by the Portuguese on November 13, 1615.

The city's economy is mainly based on tourism, as most of the cities situated in the called Região dos Lagos (Lake's Region). The city is usually visited by people from Minas Gerais state, Brasília and Rio de Janeiro city. Recently the city entered in the route of the greatest cruise ships.

Some of the tourist attractions in the city are the Feliciano Sodré bridge, the Nossa Senhora da Guia chapel, the church of São Benedito, located in Passagem neighborhood, the Nossa Senhora da Assunção church and the Municipal Theatre.

There are nine beaches in Cabo Frio: Forte Beach (praia do Forte), Peró beach (praia do Peró), São Bento beach (praia São Bento), Siqueira beach (praia do Siqueira), Sudoeste beach (praia do Sudoeste), Dunas beach (praia das Dunas), Foguete beach (praia do Foguete), Palmeiras beach (praia das Palmeiras), and Unamar beach (praia de Unamar).

As of (2005), its population is 159,685 (2005) and its area is 401 km². The elevation is 4 m. Cabo Frio has a tropical climate.

In the last years the population increased, with investments obtained by the municipality with oil royalties from Petrobras, and an elevated number of retired citizens coming from Rio de Janeiro city.

Cabo Frio is famous for their outstanding shrimp pasta that is featured in many travel magazines. The main beach, the Forte Beach, has 4 km of white sand. Its name comes from the Portuguese Fortress of the 16th century situated in the north rock.
The Buzios municipality is only 15 km away, with very exclusive and sophisticated nightlife.

Cabo Frio is served by Cabo Frio International Airport. However, apart from a few domestic destinations, international flights are mostly charter operations from Argentina, Chile, and Uruguay during the Summer. On the other hand, Cabo Frio International Airport has been establishing itself as an important cargo destination.