To consume energy efficiently as much as possible by converting waste heat directly into electricity using a thermoelectric conversion system.

A waste heat recovery system having the thermoelectric conversion system comprises a means for supplying power by the thermoelectric conversion system, and a means for utilizing heat released from the thermoelectric conversion system. The heat released from the thermoelectric conversion system is utilized for heating, defrosting, defogging, heat insulation of fuel heat insulation of an internal combustion engine, heat insulation of a fuel cell, and the like. The waste heat recovery system is mounted on a vehicle, an incinerator, a fuel cell, an industrial machine, and the like.