An electronic controller for a vehicle includes a circuit board on which an electronic component is mounted and a metal housing accommodating the circuit board therein. The housing includes an inner face and an outer face, at least one of the inner face and the outer face being subjected to surface treatment facilitating heat absorption and dissipation. The inner face of the housing further includes a protruding portion extending to a heating portion of the circuit board so as to be close to the heating portion, or includes concavities and convexities at at least a part thereof opposed to a surface of the circuit board on which the electronic component is mounted so as to increase a surface area of the inner face.