Abstract: Advertising apparatus for vending machines, mainly of the type of those which have a glass front which allows the products to be seen presented in the different compartments of the plurality of storage trays and from which compartments they are delivered to a reception tray formed in an ascending/descending body, by way of an elevator, for their carriage to the delivery box for collection by the user, so that to the ascending/descending body (7), proximate to the internal face of the glass door (2) of the machine (1), is fastened, by one of its sides, a laminar element (9) that holds publicity, which laminar element (9) on its opposing side is fastened to and wound on a bottom roller (10), which is driven by a spring tending to cause its rotation and the winding of the laminar element (9), the laminar element (9) in the unwinding thereof remaining abutting on the internal face of the glass front (3) of the machine door.