In the work vehicle, a pair of left and right fuel tanks is distributed into left and right sides of a traveling body. A tank support plate to support the fuel tanks from below is made up of a pair of front and rear transverse frames extended leftward and rightward below the left and right rear frames, and a pair of left and right tank mounting plates on which the front and rear transverse frames are held in a back-and-forth direction on both left and right sides. The left and right fuel tanks are respectively mounted and secured onto the left and right tank mounting plates. A support mount and the front transverse frame are coupled to each other by a coupling bracket.