Turlock Municipal Airport (FAA LID: O15) is a public airport located eight miles (13 km) east of Turlock, in Merced County, California, United States. This general aviation airport covers 320 acres (129 ha) and has one runway. It was purposed during World War II to train pilots for air combat.

During World War II, the airport was designated as Ballico Air Force Auxiliary Field, and was an auxiliary training airfield for Merced Army Airfield, California.

• California World War II Army Airfields

 This article incorporates public domain material from the Air Force Historical Research Agency

• FAA Airport Form 5010 for O15 PDF

• Resources for this airport:
  • FAA airport information for O15
  • AirNav airport information for O15
  • FlightAware airport information and live flight tracker
  • SkyVector aeronautical chart for O15