There is provided a working vehicle 1including the right and left vehicle frames reinforced by an upper connecting member and a lower connecting member near the engine, thereby eliminating the conventional need for e.g. highly rigid cylindrical members in constructing the right and left vehicle frames.An engine frame for mounting an engine are connected with a pair of right and left vehicle frames, and a transmission case is placed between rear portions of the right and left vehicle frames. The right and the left vehicle frames are connected via an upper connecting member and a lower connecting member. The engine has an output portion provided with a flywheel, which has its outer circumference surrounded by the right and the left vehicle frames and the upper and the lower connecting members.