To provide a tractor wherein an alternator is installed in the connecting part of a transmission shaft system from an output shaft to a transmission by using a simple and inexpensive structure, and a space in an engine room can be effectively utilized.

The tractor 1 wherein the output shaft 19 of the engine installed in a front of a tractor body is pivotally supported by a flywheel cover 27 for covering a flywheel 17 and a transmission shaft 20 is connected with a flange 30 provided at the end of the output shaft 19 via a universal joint 32 so as to transmit power to a transmission case 16 provided in the rear of the tractor body is configured so that the attachment part of the universal joint 32 and a pulley groove are integrally formed in the flange 30 of the output shaft 19, and a belt is wound around the pulley groove so as to drive the alternator 22.