A composite electronic component includes a capacitor device and a resistor device disposed on one another in a heightwise direction. The capacitor device includes a capacitor body, a first external electrode, and a second external electrode. The resistor device includes a base portion, a resistor body, a first upper surface conductor, a second upper surface conductor, a first lower surface conductor, a second lower surface conductor, a first end surface connection conductor, and a second end surface connection conductor. An upper surface of the base portion of the resistor device faces a lower surface of the capacitor body of the capacitor device, the first upper surface conductor and the first external electrode are electrically connected, and the second upper surface conductor and the second external electrode are electrically connected.