Montauk Airport (IATA: MTP, ICAO: KMTP, FAA LID: MTP) is a privately owned, public use airport located three nautical miles (6 km) northeast of the central business district of Montauk, in Suffolk County, New York, United States. It is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a reliever airport.

The airport is located on East Lake Drive between Lake Montauk and Block Island Sound. It is the easternmost airport in New York State.