A composite electronic component may include: a composite body having a capacitor and an inductor coupled to each other therein; an input terminal disposed on a first end surface of the composite body; output terminals including a first output terminal disposed on a second end surface of the composite body and a second output terminal disposed on a lower surface of the capacitor of the composite body; and a ground terminal disposed on the lower surface of the capacitor of the composite body. The capacitor may be coupled to a side surface of the inductor.