Portsmouth International Airport at Pease (IATA: PSM, ICAO: KPSM, FAA LID: PSM), formerly known as Pease International Airport, is a joint civil and military use airport located one nautical mile (2 km) west of the central business district of Portsmouth, a city in Rockingham County, New Hampshire, United States. It is owned by the Pease Development Authority. It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a non-hub primary commercial service facility.

The airport is located within the Pease International Tradeport, a result of the ongoing redevelopment of the former Pease Air Force Base which was closed under Base Realignment and Closure (BRAC) Commission action in the late 1980s and early 1990s.