
Books By Bazin
As Girish detailed, the two volumes of [Qu'est-ce que le cinéma?] What is Cinema? (1967, 1971), translated by Hugh Gray contain many of his best-known pieces like "The Ontology of the Photographic Image," "The Evolution of the Language of Cinema," "The Virtues and Limitations of Montage," "In Defense of Mixed Cinema," and his essays on Italian neo-realism, the Western, Rossellini, Chaplin, Bresson, De Sica, and so on. I might add that huge chunks of Volumes One and Two are available for preview at the publisher's website.

Articles By Bazin
Bert Cardullo has translated two Bazin essays into English for Literature Film Quarterly; the first entitled "André Bazin on Rene Clement and literary adaptation: Two original reviews" and the second "André Bazin on Claude Autant-Lara and literary adaptation: Four original reviews."

Bert Cardullo has also translated Bazin's essay "Cinema and Theology: The Case of Heaven Over the Marshes" for the Journal of Religion and Film.
Bazin's 1952 Radio-Cinéma review of Carl Dreyer's The Passion of Joan of Arc—reprinted in The Cinema of Cruelty (New York: Seaver Books, 1982), pp. 19-21—is available online.
Articles On Bazin
Peter Matthews has written an appreciative overview of André Bazin for Sight and Sound—"Divining the Real"—available at the British Film Institute website.

Bazin's religious affiliations are traced in a piece at Adherents. Greg M. Smith's essay "Reflecting on the Image: Sartrean Emotions in the Writings of André Bazin" is available in PDF format. Carlos A. Valle's tribute to Bazin is also available in PDF format. Film-Philosophy has Dan Friedman's review of Bazin at Work: Major Essays and Reviews from the Forties and Fifties, translated by Alain Piette and Bert Cardullo. Jumpcut has Bill Horrigan's review of André Bazin by Dudley Andrews.
Separate entries on specific commentary available through Senses of Cinema and the Highbeam Research Library are forthcoming.