A vehicle body structure includes a bumper reinforcement, a front side member, and a bumper stay. The front side member is formed with a closed section portion, and a protruding portion that protrudes from this closed section portion toward a vehicle front side. The bumper stay, together with a protruding portion, forms an open section portion. Also, a notch is formed on the vehicle width direction inside of the closed section portion, and a cutout is formed on the vehicle width direction outside of the open section portion. Opposing wall portions that are fixed to protruding opposing portions and opposing wall portions that connect the cutout and the notch are formed on the bumper stay. These opposing wall portions are formed with extending edge portions that extend from the cutout side toward the notch side.