American literary critic known for his innovative interpretations of literary history and of the creation of literature.

Bloom's first language was Yiddish, and he also learned Hebrew before English. He attended Cornell (B.A., 1951) and Yale (Ph.D., 1955) universities and began teaching at Yale in 1955; from 1988 he also taught at New York University. As a young man, he was much influenced by Northrop Frye (Frye, Northrop)'s Fearful Symmetry (1947), a study of William Blake, and he later stated that he considered Frye “certainly the largest and most crucial literary critic in the English language” since Walter Pater (Pater, Walter) and Oscar Wilde (Wilde, Oscar). Bloom's own early books, Shelley's Mythmaking (1959, reissued 1969), The Visionary Company: A Reading of English Romantic Poetry (1961, rev. and enlarged ed., 1971), and The Ringers in the Tower: Studies in Romantic Tradition (1971), were creative studies of the Romantic poets and their work, then out of fashion. He examined the Romantic tradition from its beginnings in the 18th century to its influence on such late 20th-century poets as A.R. Ammons (Ammons, A.R.) and Allen Ginsberg (Ginsberg, Allen), quickly making a name for himself with his individual and challenging views.

With the publication of Yeats (1970), Bloom began to extend his critical theory, and in The Anxiety of Influence (1973) and A Map of Misreading (1975), he systematized one of his most original theories: that poetry results from poets deliberately misreading the works that influence them. Figures of Capable Imagination (1976) and several other works of the next decade develop and illustrate this theme.

One of Bloom's most controversial popular works appeared in his commentary on The Book of J (1990), published with David Rosenberg's translations of selected sections of the Pentateuch. In it, Bloom speculated that the earliest known texts of the Bible were written by a woman who lived during the time of David and Solomon and that the texts are literary rather than religious ones, on which later rewriters imposed beliefs of patriarchal Judaism. This work was one of a number of his books—including Kabbalah and Criticism (1975), The American Religions (1992), Omens of Millennium (1996), and his novel The Flight to Lucifer (1979)—to deal with religious subjects.

Perhaps Bloom's greatest legacy is his passion for poetry and literature of other types too. This is reflected in his best-known work, The Western Canon: The Books and School of the Ages (1994), which rejects the multiculturalism prevalent in late 20th-century academia. He once said of multiculturalism that “it means fifth-rate work by people full of resentment.” In an interview published in 1995, Bloom reflected on the great authors of the Western world, stating,

In the mid-1980s Bloom began to work with Chelsea House Publishers to “chronicle all of Western literature.” By 2005 he had edited more than 600 volumes. Series titles include Bloom's BioCritiques on individual authors, presented in a format that includes an extensive biography and critical analyses; Bloom's Guides, on individual literary masterpieces; Bloom's Literary Places, guides to such cities as London, Dublin, and Paris; Bloom's Major Literary Characters; Bloom's Modern Critical Interpretations, on major works; Bloom's Modern Critical Views, on major writers; and Bloom's Period Studies.