To provide a driving device capable of being miniaturized.

This driving device 1a is provided with a rotation power source 11, a front stage side driving gear 141 and a rear stage side driving gear 143 receiving transmission of rotation power of the rotation power source 11, a front stage side driven gear 151 for outputting rotation power to the outside in the interlocking relationship with the front stage side driving gear 141, a rear stage side driven gear 152 for outputting rotation power to the outside in the interlocking relationship with the rear stage side driving gear 143, and a one-way clutch mechanism 18 arranged between the rear stage side driving gear 143 and the rear stage side driven gear 152.