A working vehicle includes a traveling machine assembly, a drive unit, a bonnet configured to cover the drive unit, and a cover provided below the bonnet and configured to be removably attached to the traveling machine assembly, including a main body portion extending in a longitudinal direction of the traveling machine assembly, a first male engagement portion provided at a front end portion of the main body portion, a second male engagement portion provided at a rear end portion of the main body portion, and a third male engagement portion provided at a lower end portion of the main body portion.