A high-frequency module includes a mounting board, a first electronic component, a first resin layer, and a first ground electrode. The mounting board has a first principal surface and a second principal surface facing each other. The first electronic component is disposed on the first principal surface of the mounting board. The first resin layer is disposed on the first principal surface of the mounting board, and covers at least a part of an outer peripheral surface of the first electronic component. The first ground electrode covers at least a part of the first resin layer. A principal surface of the first electronic component opposite to the mounting board is connected to the first ground electrode. The mounting board includes a second ground electrode inside the mounting board. The first ground electrode is connected to the second ground electrode.