An apparatus (1) is provided for feeding capsules (4), preferably single-use capsules for the preparation of beverages, infusions and the like, for beverage vending machines. The apparatus includes a storage chamber (2, 22) for storing capsules (4) in a random arrangement, pick-up means (10, 210) for picking up the capsules (4), a capsule transfer device (13, 213) provided with one or more compartments (14, 214) for the capsules (4), at least an unloading conveyor (19, 219) for unloading the capsules (4). The apparatus is characterized in that, between the storage chamber (2, 22) and the at least an unloading conveyor (19, 219), the apparatus (1) comprises a first orientating device (8, 28), which is adapted to orientate the capsules (4) according to at least a substantially horizontal-axis position, and a second orientating device (20, 220) which is adapted to arrange the capsules (4) according to a same vertical-axis position.