The invention provides a thin and small input device that improves a tactile operation sensation and a luxurious appearance. An input device to which an operator enters a desired command by operating it with a finger and which has a case, switch contacts disposed in the case, rotatable operation members disposed rotatably corresponding to the switch contacts that are partially projected from the holes of the case and pressed by an operator, and support members 44 for supporting the rotatable operation members by pressing it onto the case side and for operating the switch contacts when an operator presses the rotatable operation member against the pressing force.