A handle switch including a joystick and is configured to be arranged sideward of a grip of a handlebar of a straddled vehicle, wherein: the joystick includes: a stick having a rod-shaped pin; a substrate arranged so as to intersect with an axial direction of the pin; a first button, a second button and a third button provided on the substrate and arranged in a first direction, a second direction and a third direction, respectively, relative to an axis of the pin as viewed from the axial direction of the pin; and a support case that supports the stick so that the stick can be tilted at least in the first direction, the second direction and the third direction; the stick includes: a tubular portion through which the pin passes, a first leg that extends from the tubular portion in the axial direction of the pin and the first direction; a second leg that extends from the tubular portion in the axial direction of the pin and the second direction; and a third leg that extends from tubular portion in the axial direction of the pin and the third direction; the handle switch is configured so that the first leg pushes the first button when the stick is tilted in the first direction, the second leg pushes the second button when the stick is tilted in the second direction, and the third leg pushes the third button when the stick is tilted in the third direction; and characterized in that the support case is formed with: a pin hole through which the pin is inserted and that has a circumferential central inner circumference; an arc-shaped first inner circumference that is concaved in the first direction as viewed from the axial direction of the pin; an arc-shaped second inner circumference that is concaved in the second direction as viewed from the axial direction of the pin; an arc-shaped third inner circumference that is concaved in the third direction as viewed from the axial direction of the pin; a first slope that extends from the central inner circumference to the first inner circumference and is inclined relative to the axial direction of the pin; a second slope that extends from the central inner circumference to the second inner circumference and is inclined relative to the axial direction of the pin; and a third slope that extends from the central inner circumference to the third inner circumference and is inclined relative to the axial direction of the pin. the joystick includes: a stick having a rod-shaped pin; a substrate arranged so as to intersect with an axial direction of the pin; a first button, a second button and a third button provided on the substrate and arranged in a first direction, a second direction and a third direction, respectively, relative to an axis of the pin as viewed from the axial direction of the pin; and a support case that supports the stick so that the stick can be tilted at least in the first direction, the second direction and the third direction; the stick includes: a tubular portion through which the pin passes, a first leg that extends from the tubular portion in the axial direction of the pin and the first direction; a second leg that extends from the tubular portion in the axial direction of the pin and the second direction; and a third leg that extends from tubular portion in the axial direction of the pin and the third direction; the handle switch is configured so that the first leg pushes the first button when the stick is tilted in the first direction, the second leg pushes the second button when the stick is tilted in the second direction, and the third leg pushes the third button when the stick is tilted in the third direction; and characterized in that the support case is formed with: a pin hole through which the pin is inserted and that has a circumferential central inner circumference; an arc-shaped first inner circumference that is concaved in the first direction as viewed from the axial direction of the pin; an arc-shaped second inner circumference that is concaved in the second direction as viewed from the axial direction of the pin; an arc-shaped third inner circumference that is concaved in the third direction as viewed from the axial direction of the pin; a first slope that extends from the central inner circumference to the first inner circumference and is inclined relative to the axial direction of the pin; a second slope that extends from the central inner circumference to the second inner circumference and is inclined relative to the axial direction of the pin; and a third slope that extends from the central inner circumference to the third inner circumference and is inclined relative to the axial direction of the pin.