Old Town Municipal Airport and Seaplane Base (IATA: OLD, ICAO: KOLD, FAA LID: OLD), also known as Dewitt Field, is a public use airport located two nautical miles (4 km) northwest of the central business district of Old Town, in Penobscot County, Maine, United States.

[1] The seaplane base is located on Marsh Island on the Penobscot River.

[2] Dewitt Field covers an area of 360 acres (150 ha) at an elevation of 126 feet (38 m) above mean sea level.

[1] For the 12-month period ending July 31, 2006, the airport had 47,160 aircraft operations, an average of 129 per day: 99% general aviation and 1% military.

At that time there were 51 aircraft based at this airport: 80% single-engine, 8% multi-engine, 10% helicopter and 2% ultralight.