This is the first truely critical edition of Chrétien de Troyes's "Perceval" and will replace the often inaccurate text of Hilka (1932). This new edition is based on ms. Paris, Bibliothèque Nationale, fr. 12576 (T), but is moderately interventionist in its attempt to approximate more closely to the ipsissima verba of Chrétien; the critical text is accompanied by complete variants from the other manuscripts. The critical apparatus includes full descriptions of all the manuscripts of "Perceval", an examination of the manuscript transmission of the text, and of the language of the scribe of T and of Chrétien; the notes contain a running commentary on the manuscript tradition and a justification of every emendation made to the text of T. The edition concludes with a full glossary.