Abstract: In a gas spring arrangement, comprising a gas spring disposed between two elements which are pivotable in relation to one another around a pivot axis, which damps the pivot movement, and a mechanical arrangement with an activating lever for the releasable adjustment of the pivot movement, especially for the adjustment of the inclination of the backrest of office chairs, it is provided, on the one hand, to make possible a simple damping of the pivotal movement of the backrest support part relative to the seat carrier and, on the other hand, to make possible the easily operable yet still secure locking of this pivotal movement, that the gas spring (19) is fastened between two transverse struts (bolts 23, 27), each disposed on an element (seat carrier 4, backrest support 7) parallel to the pivot axis (6), that the mechanical adjustment means (29) has a sheath part (31) and a pistion part (30) longitudinally movable in the sheath part (31), that both the sheath part (31) and the piston part (30) are each connecte