A composite electronic component includes: a composite including a capacitor body including a plurality of dielectric layers and a plurality of internal electrodes alternately disposed with respective dielectric layers interposed therebetween, external electrodes extending from third and fourth surfaces of the capacitor body to portions of the first, second, fifth, and sixth surfaces, respectively, a discharge layer disposed between the external electrodes on the second surface of the capacitor body, and a protective layer disposed on the discharge layer; and conductive resin layers overlapping the third and fourth surfaces and portions of the first, second, fifth, and sixth surfaces, respectively. Widths of portions of the external electrodes formed on the first surface of the capacitor body are greater than widths of portions of the first and second conductive resin layers overlapping the first surface of the capacitor body.