This is the first comprehensive critical bibliography of the Old French epic cycle of Guillaume d'Orange. As well as covering editions and studies of the twenty principal poems of the full cycle, including fragments, the bibliography includes works on La Chanson de Guillaume, the fifteenth-century prose romance derived from the cycle, and the four poems conserved only in the so-called Geste de Monglane. It offers exhaustive coverage of material published between the mid-nineteenth century and the year 2000, including book reviews. As well as listing and commenting on editions and studies of individual poems the bibliography has sections dealing with manuscript studies, studies of the cycle as a whole and groups of poems, thematic studies of characters, motifs, geography and history related to the poems. For ease of consultation it is completed by an index of scholars and an index of authors, titles and themes. PHILIP BENNETT is Reader in French, Edinburgh University.