Leonard M. Thompson International Airport, formerly known as The Marsh Harbour International Airport, is an airport serving Marsh Harbour, a town in the Abaco Islands, The Bahamas. Marsh Harbour is a major tourist attraction. The airport offers scheduled passenger flights to Nassau and several destinations in Florida as well as regional jet flights nonstop to three major U.S. hubs, Atlanta, Charlotte and Miami in the U.S. In 2007 a new runway was built to allow larger, regional jets to operate from Marsh Harbour. A new airport terminal opened on 27 May 2014.

Marsh Harbour is a town in Abaco Islands, Bahamas, with a population of 6,283 as of 2012.