American teacher, critic, poet, and translator, best known for his contemporary English versions of classical Greek works.

While a student at Harvard University (B.A., 1925), Fitts edited the Harvard Advocate, which published his first writings. His poetry and criticism also appeared in periodicals such as Poetry, transition, and Atlantic Monthly. With poet Robert Fitzgerald (FitzGerald, R.D.) he translated The Alcestis of Euripides (1936; first performed over BBC radio, 1937) and The Antigone of Sophocles (1939; first performed over NBC radio, U.S., 1939). The New Directions press, founded by James Laughlin, a former student of Fitts, published his Poems 1929–1936 (1937) and his translations One Hundred Poems from the Palatine Anthology (1938) and More Poems from the Palatine Anthology in English Paraphrase (1941).

Although Fitts also translated Latin, Spanish, and Latin-American writings into English, his translations of ancient Greek works became particularly noted. Unlike earlier scholars, he took occasional liberties with the specific wording of a text in order to evoke the work's intrinsic nature. He later translated plays of Aristophanes, including Lysistrata (1954), The Frogs (1955), The Birds (1957), and Ladies' Day (1959); Sixty Poems of Martial (1967); and, with Fitzgerald, Sophocles' Oedipus Rex (1949). He also edited anthologies of poetry translations and, in 1960–68, the Yale Series of Younger Poets.