A work vehicle includes a partition wall member (3) below a dashboard (40) in a boundary region between an operation unit (4) and an internal space (2A) of a hood (20), and a ventilation hole for ventilation from the operation unit to the internal space is formed in the partition wall member. An engine (21) and an air cleaner (24) are arranged in the internal space (2A), the engine is arranged on a vehicle body-front side in the internal space, and an air intake port (24a) of the air cleaner is open toward a rear side, rearward of the engine in the internal space. The partition wall member (3) includes a sound-proof wall plate (32, 33), and a sound absorbing element (34) is attached to the sound-proof wall plate on the internal space side.