To provide an antenna apparatus which is loaded on a flying object and allows the flying object to always ensure communication with a communication party of a radio wave communication.

The antenna apparatus 10 which is loaded on a flying object 1 and receives the radio wave from a predetermined communication party 20 includes: a plurality of antennas 3a, 3b, 3c, 3d arranged in a circumferential direction of the flying object 1; a transmission/reception device 6; and an antenna switching device 7 that identifies the antenna that faces the communication party 20 side among the plurality of antennas and connects the transmitter/receiver to the identified antenna only.