Supporting data for GRL article Reversal of the Direction of Horizontal Velocities Induced by GIA as a Function of Mantle Viscosity. An edited version of this paper was published by AGU. Copyright (2018), American Geophysical Union. The data contains the output of FEM and normal mode GIA models used to produce the figures in the article. Data consists of horizontal and vertical velocities on an axisymmetric Earth model as a function of colatitude.