A switch device includes a drive member including a detection section or a section to be detected, the drive member being configured to change a relative position between the detection section and the section to be detected by a reciprocating operation in a first direction, a stopper disposed at a position having a fixed relative positional relationship with respect to the other of the detection section and the section to be detected, the stopper being configured to come into contact with the drive member to restrict a range of movement of the drive member, and an elastic member retained to the drive member. The stopper includes a first stopper and a second stopper, and the elastic member includes a first abutment portion, a second abutment portion, and a connecting portion that connects the first abutment portion and the second abutment portion.