Abstract: A bank lock for the ignition lock on the steering column of a motor vehicle includes a pair of arcuate arms which are hingedly connected at one end thereof and are of sufficient length to encircle a substantial segment of a steering column. A yoke element is carried by one of the arcuate arms and is adapted to be juxtaposed in close overlying relation to the housing of an ignition lock which protrudes from the steering column. One of the arcuate arms terminates in an end extension adapted to be positioned across the keyhole opening of the ignition lock and carries one of a pair of locking elements at its outer extremity. The second of the arcuate arms terminates in an end extension which is directed substantially perpendicularly to the end extension of the first arm and is adapted to be positioned in close relation to a diametrically opposed location of the ignition lock housing from the yoke.