A Nightmare on Elm Street 4: The Dream Master

is a 1988 American slasher fantasy film and the fourth film in the Nightmare on Elm Street series. The film was directed by Renny Harlin, stars Robert Englund, Lisa Wilcox and Danny Hassel. It is the sequel to A Nightmare on Elm Street 3: Dream Warriors and is followed by A Nightmare on Elm Street 5: The Dream Child.

The film was released on August 19th, 1988 to generally mixed to positive reviews, grossing over $49.3 million domestically, making it the highest grossing horror film at domestic box office released in the 1980s, and the most financially successful film in the franchise until the release of Freddy vs. Jason.