The abandoned vehicle messaging sign comprises a housing, a control circuit, a display surface, and a vehicle. The control circuit and the display surface mount in the housing. The housing mounts on the vehicle. The abandoned vehicle messaging sign displays an image of indicia indicating a sentiment that the vehicle has been abandoned. By abandoned is meant that the vehicle has been left temporarily unattended. The sentiment indicated by the abandoned vehicle messaging sign is customizable to the specific circumstances regarding the abandonment of the vehicle.