Marion County Airport (FAA LID: X35) is a county-owned public airport located in the unincorporated area of Dunnellon, in Marion County, Florida, United States. In 2014, the general aviation airport averaged 105 flights per day. The complex features two lighted runways with no control tower. During World War II, the airport was used by the United States Army Air Forces for training and was then known as the Dunnellon Army Air Field.