FUEL TANK

Provided is a fuel tank having recess portions serving as recess-shaped portions continuously formed from a tank main body and protruding inward. The fuel tank includes an inner pinch reducing recess portion () disposed on at least one side of an inner pinch generation concern region where there is a concern of an inner pinch being generated between the recess-shaped portions and a first side wall and a second side wall both of which are an upstanding wall of the tank main body. Here, the inner pinch reducing recess portion has a protrusion amount smaller than a protrusion amount of the recess-shaped portion.