Provided is a keyboard device including a key top that is arranged in an opening of a cover member and is depressible, a first magnet that is provided in the key top, and a support section that includes a second magnet, to which the first magnet is attracted, and supports the key top. The support section supports the key top to move in a moving direction intersecting with a height direction of the key top, between a first position where the first magnet is attracted to the second magnet and a second position where the attraction by pressing is released. The key top has an inclined surface formed at an edge along the moving direction.