Disclosed is a utility work vehicle having an engine section at a rear portion of a vehicle body. The engine section includes an engine having an output shaft oriented laterally along a right/left direction of the vehicle body, a speed changer device having an input shaft oriented laterally along the right/left direction of the vehicle body, the speed changer device being disposed rearwardly of the engine, a belt type stepless speed changer device disposed on one right/left side of the engine and the speed changer device and configured to transmit power from the engine to the speed changer device. A clutch is disposed between the engine and the belt type stepless speed changer device. A space is formed downwardly of the clutch between the engine and the belt type stepless speed changer device. At a portion downwardly of the speed changer device and facing the space, a front wheel driving output shaft extends forwardly from the speed changer device. To the front wheel driving output shaft, a transmission shaft is connected coaxial with the front wheel driving output shaft, the transmission shaft extending through the space forwardly.