Abstract: An engine (32) is attached to a vehicle frame (31) on a front end side relative to a cab (1). An engine cooling module (33) serves for cooling the engine (32) and it is attached to the vehicle frame (31) at a rear end. In a top plan view, the cab (1) has a projection portion projecting outward from the vehicle frame (31). The cab (1) has a through hole (12a to 12c) opening into an outdoor space of the cab (1) and an opening (3b) communicating with the through hole (12a to 12c) and opening into an indoor space (10), and the through hole (12a to 12c) opens in a lower surface of the projection portion. Thus, a work vehicle capable of preventing dust, water, or the like from entering the cab and realizing an environment in the cab comfortable for an operator is obtained.