Provided is a keyboard device that minimizes collisions between connecting parts when a configuration is adopted in which keys are connected to a frame. The keyboard device comprises a plurality of keys, a frame having a plurality of flexible parts that are flexible in the scale direction, and a plurality of connecting parts that detachably connect the keys and the flexible parts. The keyboard device is characterized in that the connecting parts corresponding to adjoining keys are provided to the keys at different positions in the lengthwise direction of the keys.