Hato Rey is an area of San Juan, Puerto Rico. It is near Santurce and Cupey, which is an area of Trujillo Alto. It is also close to Carolina, Isla Verde and the Luis Munoz Marin International Airport.

Hato Rey is a famous barrio among Puerto Ricans because a large part of Puerto Ricans travelling to San Juan must drive by Hato Rey first. It is also the birthplace of Ricky Martin.

Just like in Isla Verde's case, Hato Rey has many affluent areas, but also many areas that are full of poverty. Many housing projects ("caserios") in Hato Rey have faced Illegal drugs trade for years, some of which have gangs that have engaged in drug wars with rival gangs from Santurce, Isla Verde and Carolina.

There is much prostitution action going on in Hato Rey as well, and the Puerto Rican police has made several operations there, breaking down strip clubs that also serve as prostitution houses on the side, among other operations geared towards erradicating prostitution in Hato Rey.

On the other side, Hato Rey is one of the most important centers of Puerto Rico's economy, being home of "La Milla de Oro",("The Golden Mile"), a stretch that effectively covers only one mile, but that is home to the headquarters of many large bank institutions, including Banco Popular and about twenty other bank companies.

The Banco Popular building in Hato Rey is one of the first sights tourists can see when arriving at Puerto Rico. Because of its size, the building is very visible from the window of a descending airplane. Because of the area's closeness to the airport, major airlines, such as Avianca and Iberia, have had their offices in Hato Rey during the past. Hato Rey is also home to a series of glamorous boutiques and restaurants. Because of the prostitution in Hato Rey, the area is also home of several motels.

Other important buildings in Hato Rey include Plaza Las Americas, the Roberto Clemente Coliseum, the Centro Medico hospital and Puerto Rico's supreme court building.

Puerto Rico's FBI headquarters are located in Hato Rey.

Geographically, Hato Rey is, a small peninsula.