Final answer:
Tennessee Williams is the playwright known for 'A Streetcar Named Desire,' a seminal work that earned him the Pulitzer Prize in 1948 and is recognized as a classic of American theater.
Step-by-step explanation:
The playwright known for the play 'A Streetcar Named Desire' is Tennessee Williams. He is one of the most celebrated American playwrights of the 20th Century, alongside peers such as Arthur Miller and Eugene O'Neill. Williams is renowned for his plays that explore themes of emotional intensity, family dynamics, and societal mores, often drawing from his own life experiences. A Streetcar Named Desire, which opened on Broadway in 1947 and starred Jessica Tandy and Marlon Brando, earned him the Pulitzer Prize in 1948. His other notable work includes Cat on a Hot Tin Roof, for which he won a second Pulitzer Prize in 1955.