A composite electronic component may include: a composite body including a capacitor and an inductor coupled to each other, the capacitor having a ceramic body in which dielectric layers and internal electrodes facing each other with the dielectric layers interposed therebetween are stacked, and the inductor having a magnetic body in which magnetic layers having conductive patterns are stacked; an input terminal disposed on a first end surface of the composite body and connected to the conductive pattern of the inductor; an output terminal including a first output terminal formed on a second end surface of the composite body and connected to the conductive pattern of the inductor and a second output terminal disposed on a second side surface of the composite body; and a ground terminal disposed on a first side surface of the composite body and connected to the internal electrodes of the capacitor.