A working vehicle having high running stability with its length and width reduced and permitting high-speed run on a highway and improvement in running efficiency. For this reason, a driving unit (30) including an engine (40) is provided between front and rear driving shafts (38, 39) or above either of the front and rear driving shafts, and the driving unit is disposed such that the center of gravity (G) position of the engine (40) is situated inwardly of a chassis frame (34). In addition, a connecting structure using at least either mechanical connection or a connection via a torque convertor is provided for the connection from the engine (40) to an axle (51).
