Bottle opening device, particularly for cutting the capsule covering the stopper of a bottle, comprising a shaft provided with a threaded portion and, above, with a widened portion that has a hole in it.The widened portion comprises two plates which are provided internally with mutually aligned openings for the transversal insertion of a stopper.The plates are spaced apart so as to define a space for accommodating a supporting body which is provided with at least one cutting element.