A vehicle drive device comprising: a rotating electrical machine (MG) that functions as a driving force source for wheels (W); an input member drivingly connected to the rotating electrical machine (MG); a pair of output members each drivingly connectable to a wheel (W); a differential gear mechanism that distributes rotation transmitted from the rotating electrical machine (MG) to the pair of output members ; a transmission gear mechanism that drivingly connects the input member and the differential gear mechanism ; a hydraulic pump that includes a pump rotor and a pump chamber housing the pump rotor and that supplies oil to the rotating electrical machine (MG), bearings, or gear meshing parts; and a case that houses the rotating electrical machine (MG), the input member , the differential gear mechanism , the transmission gear mechanism , and the hydraulic pump , wherein a direction along a rotation axis of the rotating electrical machine (MG) is an axial direction (L), the case includes a partition wall that separates in the axial direction (L) a first housing chamber (A1) housing the rotating electrical machine (MG) and a second housing chamber (A2) housing the transmission gear mechanism and the differential gear mechanism , the pump chamber is formed in the partition wall so as to be located between the first housing chamber (A1) and the second housing chamber (A2) in the axial direction (L), and the hydraulic pump further includes a pump input shaft connected to the pump rotor such that the pump input shaft rotates with the pump rotor , characterized in that the pump input shaft is disposed so as to extend through the partition wall in the axial direction (L), and is drivingly connected to a shaft of the transmission gear mechanism in the second housing chamber (A2). a rotating electrical machine (MG) that functions as a driving force source for wheels (W); an input member drivingly connected to the rotating electrical machine (MG); a pair of output members each drivingly connectable to a wheel (W); a differential gear mechanism that distributes rotation transmitted from the rotating electrical machine (MG) to the pair of output members ; a transmission gear mechanism that drivingly connects the input member and the differential gear mechanism ; a hydraulic pump that includes a pump rotor and a pump chamber housing the pump rotor and that supplies oil to the rotating electrical machine (MG), bearings, or gear meshing parts; and a case that houses the rotating electrical machine (MG), the input member , the differential gear mechanism , the transmission gear mechanism , and the hydraulic pump , wherein a direction along a rotation axis of the rotating electrical machine (MG) is an axial direction (L), the case includes a partition wall that separates in the axial direction (L) a first housing chamber (A1) housing the rotating electrical machine (MG) and a second housing chamber (A2) housing the transmission gear mechanism and the differential gear mechanism , the pump chamber is formed in the partition wall so as to be located between the first housing chamber (A1) and the second housing chamber (A2) in the axial direction (L), and the hydraulic pump further includes a pump input shaft connected to the pump rotor such that the pump input shaft rotates with the pump rotor , characterized in that the pump input shaft is disposed so as to extend through the partition wall in the axial direction (L), and is drivingly connected to a shaft of the transmission gear mechanism in the second housing chamber (A2). <EOS>