Change of Habit is a 1969 American crime drama musical film directed by William A. Graham, and starring Elvis Presley and Mary Tyler Moore.

Written by James Lee, S.S. Schweitzer, and Eric Bercovici, based on a story by John Joseph and Richard Morris, the film is about three Catholic nuns, preparing for their final vows, who are sent to a rough inner city neighborhood dressed as lay missionaries to work at a clinic run by a young doctor.

Filmed on location in the Los Angeles area and at Universal Studios during March and April 1969, Change of Habit was released in the United States on November 10, 1969.

Unknown to him, the three are nuns in street clothing who want to aid the community but are afraid the local residents might be reluctant to seek help if their true identities were known.

Dr. Carpenter and the nuns are shown dealing with a non-verbal autistic girl named Amanda, a boy with a severe speech impediment, and a man beaten by loan shark enforcers.

[14] When Parker had struggled to find any studio willing to pay Presley's usual $1 million fee, he struck a deal with NBC to produce one feature film, and a TV special entitled Elvis.

[19] A. H. Weiler of The New York Times reviewed the film on a double bill with House of Cards and noted that both were "merely exemplary of professional technique and dialogue rather than memorable characterization and emotion.

"[20] Variety wrote that "its intriguing idea has a well-enough-constructed plotline to flesh out its premise for good family fare ... Presley displays his customary easy presence.

"[21] Kevin Thomas of the Los Angeles Times wrote, "Today we're simply too much aware how agonizing social injustices can be for them to be treated with the breezy, jaunty touch of simple-minded light comedy ... to watch all this frantically bouncy, thoroughly bogus business is as discomforting as listening to chalk screech across a blackboard.

"[22] Change of Habit holds a 10% rating on Rotten Tomatoes based on ten reviews, making it Presley's worst-received film on the site.

[23] When Presley entered Decca Universal Studio on March 5, 1969, for two days to record his final dramatic motion picture soundtrack, what would come to be known as the comeback television special had already been broadcast, its attendant album had been his first top ten LP in four years, and he had just finished the sessions at American Sound Studio yielding From Elvis in Memphis and the top ten singles "In the Ghetto" and "Suspicious Minds" that would cement his resurgence as a force in American popular music.

[25] A song recorded at American, "Rubberneckin'", would be used in the film and subsequently issued as the b-side of RCA single 47-9768 "Don't Cry Daddy" in conjunction with the movie premiere.