Automotive windowpane support structure

An automotive windowpane support structure (20, 160, 180) includes a slider (49, 192) bonded to an inner surface (52) of a windowpane (25) with an adhesive (108, 238). The slider is vertically movable along a rail member (24, 188). The rail member is divided into and comprised of two parts, an inner guide (41, 45, 186) and an outer guide (42, 46, 187). The inner guide is provided at a sash portion (23) of a door. The outer guide is provided at a garnish (27, 185) provided opposite to the sash portion and supports a side portion (55, 211) of the slider protruded from an edge of the windowpane. The garnish is provided such that its outer surface is flush with an outer surface of the windowpane.