A resonator includes a multilayer body including a plurality of dielectric layers. An electrode is disposed on each of the plurality of dielectric layers. The resonator includes ground electrodes disposed on any of the dielectric layers, capacitor electrodes disposed on any of the dielectric layers, and inductor electrodes. The inductor electrodes are located in portions which start from nodes between the inductor electrodes and the capacitor electrodes as start points, pass through line electrodes disposed on dielectric layers different from the dielectric layers on which the capacitor electrodes are disposed and the dielectric layers on which the ground electrodes are disposed, and reach nodes between the inductor electrodes and the ground electrode as end points. The line electrode have a ring-shaped configuration, as viewed in a stacking direction of the dielectric layers.