Abstract: A stepless speed change apparatus includes first and second parallel shafts, each carrying a plurality of discs disposed in succession along the shaft, the discs on the first shaft have progressively increasing diameters along one axial direction and the discs on the second shaft have progressively decreasing diameters in that direction, an intermediate shaft is disposed at an angle to a plane containing the axes of the first and second shafts, the intermediate shaft carries intermediate discs each of which is aligned radially with one of the discs on the first shaft and one of the discs on the second shaft, the intermediate shaft can be shifted in a direction perpendicular to the plane containing the axes of the first and second shafts so that as the intermediate shaft is moved the intermediate discs are, in turn, brought into engagement with respective pairs of discs on the first and second shafts at peripheral portions of the discs.