TRACTOR

It is an object to provide a tractor, which is a work vehicle, being capable of providing an air-conditioner unit and rear working lights in the interior of a ceiling without protruding the rear end of the cabin. Regarding a tractor (1), which is a work vehicle in which a cabin (26) for covering a drive operating unit (37) is provided, the ceiling (26f) of the cabin (26) is formed in an arc shape from the front end to the rear end thereof, and a radius (R) of curvature of the arc shape is configured to increase as the ceiling (26f) advances from the front end to the rear end of the ceiling (26f).