A vehicle side body includes a vertical plate, a horizontal plate connected to a lower edge of the vertical plate and extending outward from the edge to form an L-shaped inside edge with the vertical plate, an opening extending in the vertical plate and the horizontal plate across the inside edge, and an L-shaped bracket fixed to, around the opening, an inner surface of the vertical plate and a lower surface of the horizontal plate. A hydrogen filling port to which a hydrogen filling nozzle is connectable is attached to the L-shaped bracket. A rib plate is provided to connect an outer surface of the vertical plate and an upper surface of the horizontal plate. An accidental contact between the hydrogen filling nozzle and a body is inhibited.