Actuating handle for a door, having a handle for actuating a locking device arranged in the door, wherein the actuating handle has two stop elements (104, 104') which are arrangeable on opposite sides of a door, • wherein the handle for actuating the locking device is mounted in a first stop element so as to be rotatable about a first axis of rotation, • wherein the actuating handle furthermore has a blocking device, • wherein the blocking device has a release position, in which rotation of the handle about the first axis of rotation is enabled, and has a blocking position, in which rotation of the handle about the first axis of rotation is blocked by the blocking device, • wherein the actuating handle furthermore has an actuation mechanism for the blocking device, and • wherein the actuation mechanism has a slider element which is displaceable along a circle segment that is centred about the first axis of rotation, wherein a displacement of the slider element along the circle segment effects an actuation of the blocking device, characterized • in that the actuation mechanism for the blocking device is arranged on the first stop element, and the blocking device is arranged between the first stop element and a second stop element, • in that the actuation mechanism has a rotary slide and at least one pinion, wherein the rotary slide is mounted on the first stop element so as to be rotatable about the first axis of rotation and carries or has the slider element, wherein the pinion is mounted on the stop element so as to be rotatable about a second axis of rotation, and wherein the rotary slide is operatively connected to the pinion in such a way that a rotation of the rotary slide about the first axis of rotation effects an actuation of the blocking device from the release position into the blocking position and/or vice versa, and • in that the slider element projects in the direction of the first axis of rotation through an end face of the stop element that faces towards the handle. • wherein the handle for actuating the locking device is mounted in a first stop element so as to be rotatable about a first axis of rotation, • wherein the actuating handle furthermore has a blocking device, • wherein the blocking device has a release position, in which rotation of the handle about the first axis of rotation is enabled, and has a blocking position, in which rotation of the handle about the first axis of rotation is blocked by the blocking device, • wherein the actuating handle furthermore has an actuation mechanism for the blocking device, and • wherein the actuation mechanism has a slider element which is displaceable along a circle segment that is centred about the first axis of rotation, wherein a displacement of the slider element along the circle segment effects an actuation of the blocking device, • in that the actuation mechanism for the blocking device is arranged on the first stop element, and the blocking device is arranged between the first stop element and a second stop element, • in that the actuation mechanism has a rotary slide and at least one pinion, wherein the rotary slide is mounted on the first stop element so as to be rotatable about the first axis of rotation and carries or has the slider element, wherein the pinion is mounted on the stop element so as to be rotatable about a second axis of rotation, and wherein the rotary slide is operatively connected to the pinion in such a way that a rotation of the rotary slide about the first axis of rotation effects an actuation of the blocking device from the release position into the blocking position and/or vice versa, and • in that the slider element projects in the direction of the first axis of rotation through an end face of the stop element that faces towards the handle.