Abstract: Apparatus for opening aligned sliding leaves of furniture, wherein the or each sliding leaf comprises, at its upper part, an upper track for receiving a first roller having a vertical axis and connected to a movable part of a slide guide fixedly secured to or integral with the furniture. The movable part is movable in a direction substantially perpendicular to the plane of the leaf and is provided with an engagement member, such as a pin, coupled with a first pulley connected, by means of an inextensible, flexible element, to a second pulley in a lower part of the furniture. The second pulley is supported by a horizontal shaft extending across the width of the door leaf and is provided at its ends with a pair of arms, acting upon lateral trolleys supported by pairs of rollers sliding in guides rigidly secured to the furniture. The trolleys carry a U-section member in which run horizontal-axis second rollers and vertical-axis third rollers, rigidly connected to the door leaf by means of a lower support member.