A vehicle drive device comprising: a rotary electric machine that serves as a drive power source for a plurality of wheels; an input member drivingly coupled to the rotary electric machine; a counter gear mechanism; a differential gear device that distributes a driving force transmitted from the rotary electric machine via the input member and the counter gear mechanism, to the plurality of wheels; a case that accommodates the rotary electric machine, the input member, the counter gear mechanism, and the differential gear device; and a support member that is a separate member from the case, and is fixed inside the case; wherein the rotary electric machine and the input member are disposed on a first axis; wherein the counter gear mechanism is disposed on a second axis different from the first axis; wherein the differential gear device is disposed on a third axis that is different from the first axis and the second axis; wherein a side on which the input member is disposed with respect to the rotary electric machine in an axial direction is defined as an axial first side, and a side opposite to the axial first side is defined as an axial second side; wherein the case includes a tube-like peripheral wall portion surrounding an outer side of the rotary electric machine, the input member, the counter gear mechanism, and the differential gear device in a radial direction, a first side wall portion disposed on the axial first side with respect to the peripheral wall portion, and a second side wall portion disposed on the axial second side with respect to the peripheral wall portion; wherein the peripheral wall portion includes a first peripheral wall portion, and a second peripheral wall portion joined to the first peripheral wall portion from the axial second side; wherein an axial first-side end of the counter gear mechanism is supported by the first side wall portion, and an axial second-side end of the counter gear mechanism is supported by the support member, wherein the first peripheral wall portion and the first side wall portion are formed integrally with each other; and wherein the second peripheral wall portion and the second side wall portion are formed integrally with each other. a rotary electric machine that serves as a drive power source for a plurality of wheels; an input member drivingly coupled to the rotary electric machine; a counter gear mechanism; a differential gear device that distributes a driving force transmitted from the rotary electric machine via the input member and the counter gear mechanism, to the plurality of wheels; a case that accommodates the rotary electric machine, the input member, the counter gear mechanism, and the differential gear device; and a support member that is a separate member from the case, and is fixed inside the case; wherein the rotary electric machine and the input member are disposed on a first axis; wherein the counter gear mechanism is disposed on a second axis different from the first axis; wherein the differential gear device is disposed on a third axis that is different from the first axis and the second axis; wherein a side on which the input member is disposed with respect to the rotary electric machine in an axial direction is defined as an axial first side, and a side opposite to the axial first side is defined as an axial second side; wherein the case includes a tube-like peripheral wall portion surrounding an outer side of the rotary electric machine, the input member, the counter gear mechanism, and the differential gear device in a radial direction, a first side wall portion disposed on the axial first side with respect to the peripheral wall portion, and a second side wall portion disposed on the axial second side with respect to the peripheral wall portion; wherein the peripheral wall portion includes a first peripheral wall portion, and a second peripheral wall portion joined to the first peripheral wall portion from the axial second side; wherein an axial first-side end of the counter gear mechanism is supported by the first side wall portion, and an axial second-side end of the counter gear mechanism is supported by the support member, wherein the first peripheral wall portion and the first side wall portion are formed integrally with each other; and wherein the second peripheral wall portion and the second side wall portion are formed integrally with each other.