An apparatus for cutting cigarettes, the cigarettes comprising an axis (k), wherein the apparatus for cutting cigarettes comprises a feeder adapted to transport the cigarettes, the feeder comprising at least one guiding groove (5, 25) arranged along the feeder, the guiding groove (5, 25) being provided with a first wall, a second wall and a bottom arranged between the first wall and the second wall of the guiding groove (5, 25), a rotating shaft arranged above the feeder, at least one revolving disc knife for cutting the cigarettes along the axis (k) of said cigarettes, the revolving disc knife being disposed on the rotating shaft, wherein the revolving disc knife is positioned in a plane spaced from the axis (k) of the cigarette to be cut open, a pressing ring (10, 20) for pressing the cigarettes against the first wall and the second wall of the guiding groove (5, 25), the pressing ring (10, 20) being loosely movable around the rotating shaft, the pressing ring (10, 20) being arranged next to the revolving disc knife, wherein arrangement of the first wall and the second wall of the guiding groove (5, 25) relative to each other enables, before cutting each cigarette, to block the cigarette by means of the pressing ring (10, 20) by pushing the cigarette between the first wall and the second wall of the guiding groove (5, 25) with simultaneous deformation of said cigarette, characterised in that the first wall of the guiding groove (5, 25) is perpendicular to the bottom of the guiding groove (5, 25) and the second wall of the guiding groove (5, 25) is oriented at an obtuse angle (β) with respect to the bottom of the guiding groove (5, 25), the revolving disc knife is positioned at the first wall, and the pressing ring (10, 20) and the revolving disc knife are located above a straight section of the feeder. a feeder adapted to transport the cigarettes, the feeder comprising at least one guiding groove (5, 25) arranged along the feeder, the guiding groove (5, 25) being provided with a first wall, a second wall and a bottom arranged between the first wall and the second wall of the guiding groove (5, 25), a rotating shaft arranged above the feeder, at least one revolving disc knife for cutting the cigarettes along the axis (k) of said cigarettes, the revolving disc knife being disposed on the rotating shaft, wherein the revolving disc knife is positioned in a plane spaced from the axis (k) of the cigarette to be cut open, a pressing ring (10, 20) for pressing the cigarettes against the first wall and the second wall of the guiding groove (5, 25), the pressing ring (10, 20) being loosely movable around the rotating shaft, the pressing ring (10, 20) being arranged next to the revolving disc knife, wherein arrangement of the first wall and the second wall of the guiding groove (5, 25) relative to each other enables, before cutting each cigarette, to block the cigarette by means of the pressing ring (10, 20) by pushing the cigarette between the first wall and the second wall of the guiding groove (5, 25) with simultaneous deformation of said cigarette, characterised in that the first wall of the guiding groove (5, 25) is perpendicular to the bottom of the guiding groove (5, 25) and the second wall of the guiding groove (5, 25) is oriented at an obtuse angle (β) with respect to the bottom of the guiding groove (5, 25), the revolving disc knife is positioned at the first wall, and the pressing ring (10, 20) and the revolving disc knife are located above a straight section of the feeder.