An input device (1; 1E) comprising: a case (2; 2D; 2E) having a fixed electrode; a moving member having a moving electrode arranged to face the fixed electrode, the moving electrode being configured to be displaced with respect to the fixed electrode; a pusher arranged opposite from the fixed electrode with respect to the moving electrode; and a holder (6; 6A; 6B; 6C; 6E) including a frame portion and a coupling portion, the frame portion being gripped by the case (2; 2D; 2E), the coupling portion coupling the pusher to the frame portion inside an opening of the frame portion to allow the pusher to be displaced along thickness of the frame portion, at least one member selected from the group consisting of the case (2; 2D; 2E) and the holder (6; 6A; 6B; 6C; 6E) including a restricting portion (64; 64A; 641B, 642B; 64C; 64E), the restricting portion (64; 64A; 641B, 642B; 64C; 64E) protruding toward, and coming into contact with, the other member selected from the group consisting of the case (2; 2D; 2E) and the holder (6; 6A; 6B; 6C; 6E), to restrict dragging of the frame portion into the opening of the frame portion via the coupling portion while the pusher is being displaced toward the moving electrode, the frame portion has: a first surface located closer to the fixed electrode; and a second surface located more distant from the fixed electrode, characterized in that the case (2; 2D; 2E) has: a first part facing the first surface of the frame portion; and a second part facing the second surface of the frame portion, the frame portion being sandwiched between the first part and the second part, and the restricting portion (64; 64A; 641B, 642B; 64C; 64E) is provided between the first surface of the frame portion and the first part of the case (2; 2D; 2E) and/or between the second surface of the frame portion and the second part of the case (2; 2D; 2E). a case (2; 2D; 2E) having a fixed electrode; a moving member having a moving electrode arranged to face the fixed electrode, the moving electrode being configured to be displaced with respect to the fixed electrode; a pusher arranged opposite from the fixed electrode with respect to the moving electrode; and a holder (6; 6A; 6B; 6C; 6E) including a frame portion and a coupling portion, the frame portion being gripped by the case (2; 2D; 2E), the coupling portion coupling the pusher to the frame portion inside an opening of the frame portion to allow the pusher to be displaced along thickness of the frame portion, at least one member selected from the group consisting of the case (2; 2D; 2E) and the holder (6; 6A; 6B; 6C; 6E) including a restricting portion (64; 64A; 641B, 642B; 64C; 64E), the restricting portion (64; 64A; 641B, 642B; 64C; 64E) protruding toward, and coming into contact with, the other member selected from the group consisting of the case (2; 2D; 2E) and the holder (6; 6A; 6B; 6C; 6E), to restrict dragging of the frame portion into the opening of the frame portion via the coupling portion while the pusher is being displaced toward the moving electrode, the frame portion has: a first surface located closer to the fixed electrode; and a second surface located more distant from the fixed electrode, characterized in that the case (2; 2D; 2E) has: a first part facing the first surface of the frame portion; and a second part facing the second surface of the frame portion, the frame portion being sandwiched between the first part and the second part, and the restricting portion (64; 64A; 641B, 642B; 64C; 64E) is provided between the first surface of the frame portion and the first part of the case (2; 2D; 2E) and/or between the second surface of the frame portion and the second part of the case (2; 2D; 2E).