An antenna module includes digital phase shifters, a plurality of antenna elements arranged in a first direction, and a fixed phase shifter. Each of the digital phase shifters changes a phase of a signal to a first phase value. The fixed phase shifter changes a phase of a signal to a second phase value, the second phase value being obtained by adding a predetermined offset phase value to the first phase value. A middle point of a virtual line is an antenna center and connects a center of an antenna element located on an end in the first direction and a center of an antenna element located on a different end. Under a symmetrical condition, an antenna center among the plurality of antenna elements are paired as an antenna element pair, the fixed phase shifter is electrically connected to at least one antenna element of the antenna element pair.