A cylinder lock assembly comprising: - a rotary knob device comprising a rotary knob stator and a rotary knob rotor rotatably mounted in the rotary knob stator; - a cylinder lock device comprising a cylinder lock stator and a cylinder lock rotor rotatably mounted in the cylinder lock stator; - a lock bit which is rotatably mounted with respect to the rotary knob device and the cylinder lock device; and - a coupling device, wherein the coupling device extends along a longitudinal axis and is transferable into at least an engaged state and a disengaged state, characterized in that the coupling device comprises a cylinder lock-rotor coupler, a rotary knob-rotor coupler rotatably mounted with respect to at least a first direction of rotation, a lock bit coupler, and at least one engagement element, wherein the coupling device can be coupled or is coupled to the cylinder lock rotor via the cylinder lock-rotor coupler, wherein the coupling device can be coupled or is coupled to the rotary knob rotor via the rotary knob-rotor coupler, wherein the coupling device can be coupled or is coupled to the lock bit via the lock bit coupler, wherein the coupling device can be transferred from the engaged state to the disengaged state by a rotation of the rotary knob-rotor coupler with respect to the first direction of rotation, wherein the engagement element is engaged with the cylinder lock-rotor coupler in the engaged state, and wherein the engagement element is disengaged from the cylinder lock-rotor coupler in the disengaged state, so that the lock bit coupler is rotatable relative to the cylinder lock-rotor coupler in the disengaged state. - a rotary knob device comprising a rotary knob stator and a rotary knob rotor rotatably mounted in the rotary knob stator; - a cylinder lock device comprising a cylinder lock stator and a cylinder lock rotor rotatably mounted in the cylinder lock stator; - a lock bit which is rotatably mounted with respect to the rotary knob device and the cylinder lock device; and - a coupling device, wherein the coupling device extends along a longitudinal axis and is transferable into at least an engaged state and a disengaged state, characterized in that the coupling device comprises a cylinder lock-rotor coupler, a rotary knob-rotor coupler rotatably mounted with respect to at least a first direction of rotation, a lock bit coupler, and at least one engagement element, wherein the coupling device can be coupled or is coupled to the cylinder lock rotor via the cylinder lock-rotor coupler, wherein the coupling device can be coupled or is coupled to the rotary knob rotor via the rotary knob-rotor coupler, wherein the coupling device can be coupled or is coupled to the lock bit via the lock bit coupler, wherein the coupling device can be transferred from the engaged state to the disengaged state by a rotation of the rotary knob-rotor coupler with respect to the first direction of rotation, wherein the engagement element is engaged with the cylinder lock-rotor coupler in the engaged state, and wherein the engagement element is disengaged from the cylinder lock-rotor coupler in the disengaged state, so that the lock bit coupler is rotatable relative to the cylinder lock-rotor coupler in the disengaged state. wherein the engagement element is engaged with the cylinder lock-rotor coupler in the engaged state, and wherein the engagement element is disengaged from the cylinder lock-rotor coupler in the disengaged state, so that the lock bit coupler is rotatable relative to the cylinder lock-rotor coupler in the disengaged state.