We present a new 3D GPS velocity solution for 182 sites for the region encompassing the Western Alps, Pyrenees. The only significant horizontal deformation (0.2 mm yr−1
over a distance of 50 km) is a NNE-SSW extension in the western Pyrenees. In contrast, significant uplift rates up to 2 mm yr−1
occur in the Western Alps but not in the Pyrenees. A correlation between site elevations and fast uplift rates in the Western Alps suggests that part of this uplift is induced by postglacial rebound.