A motorcycle carrier attaches to a conventional trailer ball and supports a motorcycle front wheel for towing the motorcycle. The carrier resides approximately horizontally and provides a cradle for the motorcycle front wheel holding the front wheel, and motorcycle, in a vertical attitude. The carrier includes a downward facing mouth to place over the trailer ball. The mouth includes an aligning surface for cooperation with a flattened top surface found on known trailer balls. Retainers reside against surfaces of the trailer ball opposite the aligning surface to hold the ball in alignment with the alignment surface and thereby hold the position of the carrier on the trailer ball. Tie down straps may be used to further hold the motorcycle in a vertical attitude.