A cooling device cools an electronic component using a plasma actuator provided with a dielectric, a first electrode arranged on one surface of the dielectric to generate an induced flow, and a second electrode arranged on the other surface of the dielectric, in which the electronic component and a third electrode are arranged in a flow direction of the induced flow, and a voltage applied to the third electrode is a voltage that generates a potential difference, which is capable of attracting the induced flow, between the first electrode and the third electrode.