A vehicle door structure is provided that prevents a swing door from being opened when a slide door and the swing door are not locked. A vehicle door structure (1) includes a lock mechanism (60) configured to lock a swing door (7) with respect to a vehicle body (2) at any position of a slide door (6) other than a fully open position and to lock the slide door (6) with respect to the swing door (7) and cancel a locked condition of the swing door (7) with respect to the vehicle body (2) at the fully open position of the slide door (6).
