The object of the present invention is to provide a seat cushion for vehicles which is excellent in recyclability, fitting feeling and cushioning properties when an occupant is seated.A plurality of independent rod-like or plate-like supporting bodies are constructed by a synthetic resin foam having a bending deflection amount equal to or larger than 20 mm and a load between 2 and 100 N at the 20 mm bending deflection time, a seat cushion pad is structured such as to be mounted, fitted or fixedly provided in the edge-like member or be integrally formed with the edge-like member so as to be supported at one point or a plurality of points in a direction of bridging between the edge-like members, a plurality of supporting bodies 3 are structured such as to be lined up at predetermined intervals.