texte intégral disponible sur http://proc.sf2a.asso.fr/2006/2006sf2a.conf..0115B.pdfInternational audienceThe Pierre Auger Observatory was designed to observe cosmic rays of ultra-high energy. It has also the capability to observe rare neutrino-induced showers. An evaluation of the sensitivity of the Surface Detector is presented and a procedure to discriminate them from the background is described