Abstract: The invention relates to a container-positioning device and a positioning machine supporting same. The device can be used with containers that have a neck and a mouth. It comprises a funnel (4) whose edges are made up of: A first curved, stationary plate (5), the center of which is oriented towards the inside of the funnel (4). A second plate (6), opposite the former and movable in the horizontal direction, and which has an upper section (61), with a retractable orienting device (11). The upper section (61) is movable relative to a lower section (62), between: a first end at which it is aligned with the lower section (62) or closer to the first plate (5) than the lower section (62); and a second end at which the upper section (61) is farther from the first plate (5); a third flat plate (9) movable in a direction perpendicular to the opening (1).