Hancock County–Bar Harbor Airport (IATA: BHB, ICAO: KBHB, FAA LID: BHB) is a county-owned, public-use airport located in Trenton, Maine, eight nautical miles (9 mi, 15 km) northwest of the central business district of Bar Harbor, a city in Hancock County, Maine, United States. It serves the residents of Hancock County with commercial and charter aviation services. During the summer months, the airport becomes one of Maine's busiest, with significant private jet operations bringing visitors to the numerous summer colonies in the county, which includes Mount Desert Island. Scheduled passenger airline service is subsidized by the Essential Air Service program.

As per Federal Aviation Administration records, the airport had 10,562 passenger boardings (enplanements) in calendar year 2008, 10,100 enplanements in 2009, and 11,109 in 2010. 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-primary commercial service facility.