A multi-directional input device, comprising: a case having a bottom plate ; a pair of upper and lower arms supported to be movable in two orthogonal directions in the case , the pair of upper and lower arms each having an elongated hole extending in a direction orthogonal to a moving direction; an operation shaft that is rotatable in a state of penetrating each elongated hole ; an actuating member that is supported to be movable in an axial direction of the operation shaft at a lower end of the operation shaft projecting downward of the lower arm , and is provided with a downward convex spherical trapezoidal portion whose diameter decreases downward; a compression coil spring that is provided between the operation shaft and the actuating member , and presses the downward convex spherical trapezoidal portion against the bottom plate to return the operation shaft to a neutral state; and a plurality of electric components operated via each arm by rotation of the operation shaft , wherein an upward convex spherical trapezoidal portion whose diameter decreases upward is provided at a lower end of the operation shaft projecting downward of the lower arm , a receiving portion for the upward convex spherical trapezoidal portion is provided in the case , the receiving portion has a receiving surface that is configured with a spherical surface having a radius of curvature identical to a radius of curvature of a spherical zone of the upward convex spherical trapezoidal portion , the receiving surface against which a spherical zone of the upward convex spherical trapezoidal portion is pressed from downward by the compression coil spring , and the operation shaft is supported to be rotatable about a center of curvature of the receiving surface . a case having a bottom plate ; a pair of upper and lower arms supported to be movable in two orthogonal directions in the case , the pair of upper and lower arms each having an elongated hole extending in a direction orthogonal to a moving direction; an operation shaft that is rotatable in a state of penetrating each elongated hole ; an actuating member that is supported to be movable in an axial direction of the operation shaft at a lower end of the operation shaft projecting downward of the lower arm , and is provided with a downward convex spherical trapezoidal portion whose diameter decreases downward; a compression coil spring that is provided between the operation shaft and the actuating member , and presses the downward convex spherical trapezoidal portion against the bottom plate to return the operation shaft to a neutral state; and a plurality of electric components operated via each arm by rotation of the operation shaft , wherein an upward convex spherical trapezoidal portion whose diameter decreases upward is provided at a lower end of the operation shaft projecting downward of the lower arm , a receiving portion for the upward convex spherical trapezoidal portion is provided in the case , the receiving portion has a receiving surface that is configured with a spherical surface having a radius of curvature identical to a radius of curvature of a spherical zone of the upward convex spherical trapezoidal portion , the receiving surface against which a spherical zone of the upward convex spherical trapezoidal portion is pressed from downward by the compression coil spring , and the operation shaft is supported to be rotatable about a center of curvature of the receiving surface . <EOS>