LaGuardia International Airport (IATA: LGA, ICAO: KLGA) is an airport serving New York City, United States, located on the waterfront of Flushing in the borough of Queens. It is named after a former Mayor of New York, Fiorello LaGuardia. "LaGuardia Airport" is the official name of the airport according to the Port Authority of New York and New Jersey, which operates the facility.

LaGuardia is the smallest of the New York area's three primary commercial airports, the other two of which are John F. Kennedy International Airport in southern Queens and Newark Liberty International Airport in Newark, New Jersey. LaGuardia is popular due to its central location and proximity to Manhattan. In spite of the airport's small size, wide-body aircraft once visited regularly; the McDonnell Douglas DC-10 and Lockheed L-1011 were even specifically designed for use at LaGuardia. Today, the only scheduled widebody service is one of Delta's many Atlanta flights aboard a Boeing 767-300 although the larger Boeing 767-400, which was designed with LaGuardia's size limitations in mind, is occasionally rotated in Delta's schedule. The airport serves as a focus city for Delta Air Lines, American Airlines, and US Airways.

Most flights from LaGuardia go to destinations within the US and Canada, with seasonal flight service to Aruba, the Bahamas and Bermuda. Contrary to popular belief, the airport does indeed have INS/FIS facilities capable of processing customs and immigration on arriving international flights, however said facilities are insufficient to efficiently handle the number of passengers that a non-precleared scheduled airline service would require.

A perimeter rule prohibits incoming and outgoing flights that exceed 1,500 miles (2,400 km)—except on Saturdays, when the ban is lifted, and to Denver, which was grandfathered in — so most transcontinental and international flights use the area's other two major airports, JFK and Newark.

In 2005 the airport handled 26 million passengers; JFK handled about 41 million and Newark handled about 33 million, making for a total of approximately 100 million travelers using New York's airports as the city's airspace surpassed Chicago's to become the busiest in the United States.