SIDE DOOR STRUCTURE FOR VEHICLE

A side door structure (10) includes an inner panel (14) made of a fiber reinforced resin and formed such that a peripheral wall (14R) stands outward in a vehicle width direction from a peripheral edge of a side wall (14S), an impact beam (18) located inside the peripheral wall (14R), apart from the side wall (14S) in the vehicle width direction, and a bracket (20) that fixes a rear end portion of the impact beam (18) to the inner panel (14). The bracket (20) has a beam joint wall (20B) to which the rear end portion of the impact beam (18) is joined, a connecting wall (20C) that stands inward in the vehicle width direction from the beam joint wall (20B), and a panel joint wall (20P) connected to an end portion of the connecting wall (20C) and joined to the side wall (14S). The panel joint wall (20P) overlaps a flared portion (30A) of a vehicle body panel in the longitudinal direction.