Abstract: The steering wheel lock and an air bag anti-theft device is adapted to fit atop a steering wheel having a hub, a plurality of spokes about a central hub axis and carrying an air bag thereon. The device includes a first and a second platform slidably engaged together. Each platform has, at opposing ends, an arcuate, steering wheel grip member with a substantially semicircular wheel grip face. Each grip face has an open mouth which faces inboard towards said central axis of said steering wheel. The device also includes first and second laterally spaced apart locking bars each carrying locking grooves. The locking bars are mounted on one of said first and said second platforms. Respective receiving channels hold and guide the first and second locking bars. The channels are formed on the other of said first and second platforms such that said locking bars slide in and out of said receiving channels in an unlocked mode. A key actuatable lock is mounted on said other of said first and second platforms.