A steering lock device includes a lock bolt configured to correspond to rotation of a key cylinder and to unlock a steering shaft, and an ignition switch configured to correspond to the rotation of the key cylinder and to perform switch operation. In the steering lock device, the lock bolt is provided to a rear side of a body in a direction of a body side orthogonal to a rotation axis of the key cylinder. Also, the ignition switch includes a first switch and a second switch and is arranged to a side part of the body in a direction different from the forward movement direction of the lock bolt. The first switch is configured as the ignition switch and the second switch is configured as a key detection switch.