To provide an air bag device and a steering wheel in which the horn operation feeling can be improved. [MEANS FOR SOLVING THE PROBLEMS] This air bag device comprises an air bag unit (2) which has an air bag, an inflator (12) for inflating the air bag, and a cover (13) installed to cover the folded air bag and which is movable in a pressing direction when the cover (13) is pressed, a support plate(3) fixed to a steering wheel, three springs (4a to 4c) biasing the air bag unit (2) in the direction opposite to the pressing direction, and three horn switches (5a to 5c) arranged at positions thatare, in the steering wheel, closer to the radially outer periphery of the steering wheel than the springs (4a to 4c) and simultaneously closer to the surface of the cover (13) than the springs (4a to4c).