Mercer County Airport

Mercer County Airport may refer to:


 * Mercer County Airport (Illinois) in Aledo, Illinois, United States (FAA: C00)
 * Mercer County Airport (West Virginia) in Bluefield, West Virginia, United States (FAA: BLF)
 * Mercer County Regional Airport in Hazen, North Dakota, United States (FAA: HZE)
 * Trenton-Mercer Airport, formerly Mercer County Airport, in Trenton, New Jersey, United States (FAA: TTN)