Abstract: An accessory for wheelchairs for playing football as a sport includes a pair of mutually independent mechanisms, symmetrical in respect of a central longitudinal plane, each of which includes an operating bar (3) and a mechanism made up of a hinged quadrangle, formed of an articulated linkage base which forms a fixed part joined to the body of the chair and which houses a pin (5) for the operating bar (3) to rotate; a propulsion body (9) for propelling and retaining a ball, hinged to the fixed part on a hinge pin (91); an operating lever (17) joined to the lower part of the operating bar (3), and able to turn with said bar; and an auxiliary part (18), hinged to the operating lever (17) on a hinging pin (93), and to the mechanism for propelling and retaining the ball on one hinging pin (92).