A work vehicle includes a cabin, a driver's seat provided in the cabin, a step disposed downwardly of the cabin for providing access for a driver to the driver's seat and an air conditioner for conditioning air inside the cabin, the air conditioner having an air conditioner body, an air inlet/outlet box, and a blower pipe for sending conditioned air from the air conditioner body to the air inlet/outlet box. The cabin includes an entrance door mounted to one lateral side thereof and includes the air inlet/outlet box mounted to the other lateral side thereof. The air conditioner body is disposed downwardly of the driver's seat and the blower pipe is disposed downwardly of the step.