An antenna array according to an embodiment includes antenna elements arranged in a predetermined direction. Each antenna element includes a first radiation body, a second radiation body to be spaced apart from the first radiation body in a first direction, a third radiation body to be spaced apart from the first radiation body in a second direction, a first signal pad and a second signal pad to supply signals to the first radiation body, a first transmission line extending in the first direction to connect the first signal pad and the first radiation body, a second transmission line extending in the second direction to connect the second signal pad and the first radiation body, a third transmission line configured to connect the first radiation body and the second radiation body, and a fourth transmission line configured to connect the first radiation body and the third radiation body.