The Grenville Front is a prominent tectonic feature of the Canadian Shield which has been the focus of a LITHOPROBE transect. A strong electrical anisotropy has been detected in a frequency range of 0.1--0.01 Hz (≈50 to 150 km), the most conductive direction being oriented N80E. In order to compare electrical and seismic anisotropies, ten seismometers have been deployed across the Grenville Front to record teleseismic events. S-wave splitting measurements show an average delay of 1.54¿0.21 s between the fast and the slow components. The fast axis direction is approximately E-W at all stations, showing a strong coherence between the stations along the complete transect. This azimuth correlates well with that of the electrical anisotropy. The electrical anisotropy originates in the subcrustal lithosphere between 50 and 150 km. The similarity of the magnetotelluric and seismic anisotropy directions across the Grenville Front is an argument in favor of an origin of the seismic anisotropy in the subcrustal lithosphere as advocated by Silver and Kaneshima (1993). ¿ American Geophysical Union 1996