A power takeoff unit transmits torque taken from a transmission of a vehicle to an output shaft. The power takeoff unit is comprised of a casing combinable with the transmission at a first end; a first shaft receiving the torque about a first axis; a second shaft rotatable about the first axis; a clutch slidably fitting with the second shaft and being directed to the first shaft, the clutch being movable along the first axis between a first position to interrupt transmission of the torque and a second position to transmit the torque from the first shaft to the second shaft; a first gear projecting from the bearing toward the first end and being rotatable along with the second shaft without any support excepting the bearing; and a third shaft including a second gear meshing with the first gear, thereby outputting the transmitted torque.