A high-frequency module includes a wiring substrate, a high-frequency circuit including circuit components disposed on the upper surface of the wiring substrate, a post made of metal and disposed on the upper surface of the wiring substrate, a sealing resin covering the circuit components, and an antenna substrate disposed on the upper surface of the sealing resin and having an antenna formed by a metal pattern. A groove is provided on the sealing resin, at least a part of the post is exposed from the groove, a central surface and two opposing side wall surfaces located higher than the central surface are formed at the upper side of the post, and a conductive adhesive is bonded to the central surface, the two side wall surfaces, and the antenna.