A drive device includes: an oil pump (80); a first rotation transfer member drivably coupled to the oil pump (80) and driven by at least one of an internal combustion engine (2) and a rotary electric machine (3); and a second rotation transfer member drivably coupled to wheels and driven by the rotary electric machine (3). One of the first rotation transfer member and the second rotation transfer member is a pinion (64). The other rotation transfer member is a carrier (60) that rotatably supports the pinion (64). The pinion (64) and the carrier (60) are rotated together with each other in the case where the oil pump (80) is driven by the rotary electric machine (3).