as No. 1 on its first list of the 101 Greatest Screenplays.
The screenplay for the wartime tale of courage and cynicism starring Humphrey Bogart was written by Howard Koch and brothers Julius and Philip Epstein.
It was followed on the list by the screenplay for The Godfather, written by Mario Puzo and Francis Ford Coppola; Chinatown, written by Robert Towne; Citizen Kane, by Herman Mankiewicz and Orson Welles; and All About Eve by Joseph Mankiewicz.
Rounding out the top five were: Annie Hall by Woody Allen and Marshall Brickman Sunset Boulevard by the writing team of Charles Brackett and Billy Wilder and DM Marshman Jr Paddy Chayefsky's Network Wilder and IAL Diamond's Some Like It Hot; and Coppola and Puzo's The Godfather Part II.
The list was announced by the Writers Guild on Thursday night.
The list was chosen by Guild members from more than 1,400 nominated screenplay.