In a sliding door comprising a first frame element oriented in the longitudinal direction of the sliding door and a second frame element extending normal to the first frame element and being connected thereto, wherein, in an opening formed at least in the first frame element, a door fitting is disposed which includes a support roller and a lifting member which is height-adjustable between a lower rest position and an operating position, the door fitting includes a stop spaced from the support roller. In the rest position, the lifting member is closest to the support roller. The operating position is adjustable by an adjustment element moving the lifting member toward the operating position in an inclined guide structure against the force of a return arrangement.