A seating furniture comprising a chassis, a seat part fitting coupled to a seat part and a back part pivotable relative to the seat part fitting, wherein - the seat part fitting is displaceable relative to the chassis and pivotable in the inclination by means of at least one displacement unit, wherein - the displacement unit has at least one first chassis lever articulated to the chassis and at least one first and one second seat lever articulated in each case to the seat part fitting, wherein - a coupling lever being connected both to the first seat lever and to the second seat lever in an articulated manner, wherein - a control lever together with the first chassis lever, the first or the second seat lever and the coupling lever forming a four-bar linkage, wherein - each pivoting movement of the first chassis lever relative to the chassis brings about a forced pivoting of the first and the second seat lever relative to the seat part fitting, wherein - each pivoting movement of the first chassis lever and of the first and the second seat lever brings about a forced displacement and inclination adjustment of the seat part fitting relative to the chassis, wherein - the seating furniture is adjustable between an upright sitting position and a lying position, the back part being pivoted further to the rear relative to the seat part fitting in the lying position than in the upright sitting position, wherein - during the adjustment of the seating furniture from the upright sitting position to the lying position, the seat part fitting is displaced forwards by a displacement distance relative to the chassis and is adjusted in the inclination by an angular amount, the seat part fitting being adjusted in its inclination by a larger angular amount, preferably by an angular amount at least twice as large, during a first third of this displacement distance than during a last third of this displacement distance. - the seat part fitting is displaceable relative to the chassis and pivotable in the inclination by means of at least one displacement unit, wherein - the displacement unit has at least one first chassis lever articulated to the chassis and at least one first and one second seat lever articulated in each case to the seat part fitting, wherein - a coupling lever being connected both to the first seat lever and to the second seat lever in an articulated manner, wherein - a control lever together with the first chassis lever, the first or the second seat lever and the coupling lever forming a four-bar linkage, wherein - each pivoting movement of the first chassis lever relative to the chassis brings about a forced pivoting of the first and the second seat lever relative to the seat part fitting, wherein - each pivoting movement of the first chassis lever and of the first and the second seat lever brings about a forced displacement and inclination adjustment of the seat part fitting relative to the chassis, wherein - the seating furniture is adjustable between an upright sitting position and a lying position, the back part being pivoted further to the rear relative to the seat part fitting in the lying position than in the upright sitting position, wherein - during the adjustment of the seating furniture from the upright sitting position to the lying position, the seat part fitting is displaced forwards by a displacement distance relative to the chassis and is adjusted in the inclination by an angular amount, the seat part fitting being adjusted in its inclination by a larger angular amount, preferably by an angular amount at least twice as large, during a first third of this displacement distance than during a last third of this displacement distance.