A stacked solid electrolytic capacitor includes a plurality of stacked solid electrolytic capacitor elements. Each solid electrolytic capacitor element includes an anode formed of a valve action metal, an anode section formed on an end of the anode, a dielectric formed on the surface of the valve action metal and including an oxide of the valve action metal, and a cathode layer formed on the dielectric. The cathode layers and the anode sections of the solid electrolytic capacitor elements are, respectively, connected to each other across the plurality of stacked solid electrolytic capacitor elements. A conductive layer extending in the stacking direction is formed on at least part of a side face of an area where the cathode layers of the solid electrolytic capacitor elements are formed.