In a Lonely Place (1950) is a film noir directed by Nicholas Ray, and starring Humphrey Bogart and Gloria Grahame, produced for Bogart's Santana Productions. The script was adapted by Edmund North from the 1947 novel In a Lonely Place by Dorothy B. Hughes.

Bogart stars in the film as Dixon Steele, a cynical screenwriter suspected of murder. Grahame co-stars as Laurel Gray, a neighbor who falls under his spell. Beyond its surface plot of confused identity and tormented lust, the film is a mordant comment on Hollywood mores and the pitfalls of celebrity and near-celebrity, in much the same vein as two other more widely-publicized American films released that same year, Billy Wilder's Sunset Boulevard and Joseph Mankiewicz's All About Eve.

Although not as well known as his other work, Bogart's performance in this film is considered by many critics to be among his finest and the film's reputation itself has grown over time along with Ray's. The film is now considered a classic film noir, as evidenced by its inclusion on the Time magazine "All-Time 100 List."

In 2007, In a Lonely Place was selected for preservation in the United States National Film Registry by the Library of Congress as being "culturally, historically, or aesthetically significant."

Screenwriter Dixon Steele, faced with the odious task of scripting a trashy bestseller, has hat-check girl Mildred Atkinson tell him the story in her own words. Later that night, Mildred is murdered and Steele is a prime suspect; his record of belligerence when angry and his macabre sense of humor tell against him. Fortunately, lovely neighbor Laurel Gray gives him an alibi. Laurel proves to be just what Steele needed, and their friendship ripens into love. Will suspicion, doubt, and Steele's inner demons come between them? Written by Rod Crawford