Thomas Lanier Williams III (March 26, 1911 – February 25, 1983), known by his pen name Tennessee Williams, was an American playwright and screenwriter. Along with contemporaries Eugene O'Neill and Arthur Miller, he is considered among the three foremost playwrights of 20th-century American drama.

At age 33, after years of obscurity, Williams suddenly became famous with the success of The Glass Menagerie (1944) in New York City. It was the first of a string of successes, including A Streetcar Named Desire (1947), Cat on a Hot Tin Roof (1955), Sweet Bird of Youth (1959), and The Night of the Iguana (1961). With his later work, Williams attempted a new style that did not appeal as widely to audiences.