Manchester–Boston Regional Airport (IATA: MHT, ICAO: KMHT, FAA LID: MHT), commonly referred to as Manchester Airport, is a public use airport 3 miles (5 km) south of the central business district of Manchester, New Hampshire, United States on the border of Hillsborough and Rockingham counties. It is owned by the City of Manchester, and is in the southern part of the city on the border with Londonderry, New Hampshire.

Opened in 1927, Manchester–Boston Regional Airport is by far the busiest airport in New Hampshire, with ten times the traffic of the next-busiest, Portsmouth. It is the only airport in the state with substantial commercial service. It is also New England's fifth-largest airport by passenger volume, behind Boston Logan in Massachusetts; Bradley International in Connecticut; T. F. Green in Rhode Island; and Portland International Jetport in Maine. It moved more than 1 million passengers in a year for the first time in 1997. After years of growth, it handled 4.33 million passengers in 2005, its peak year. Passenger tallies have declined since then, similarly with many regional airports; it handled 1.85 million passengers in 2018, and traffic fell sharply during the COVID-19 pandemic.

It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2021–2025, in which it is categorized as a small hub primary commercial service facility. The facility was known as Manchester Airport until April 18, 2006, when it added "Boston Regional" to advertise its proximity to Boston, about 50 miles (80 km) to the south.