A differential device includes a differential gear mechanism having a plurality of differential gears, a plurality of differential gear support bodies supporting the plurality of differential gears, and a pair of output gears meshing with each of the differential gears; and a differential case having a support member having a plurality of opposite ends-supporting parts supporting opposite end parts of each of the differential gear support bodies, a first cover member covering a back face of one of the output gears and capable of being joined to the support member, and a second cover member covering a back face of the other output gear and capable of being joined to the support member, wherein a recess portion facing a back face of each of the differential gears is formed in an outer support part, supporting of the differential gear support body on an outer side of the output gear.