| Title |
Director |
Cast |
Genre |
Note |
| New York, New York | Martin Scorsese | Liza Minnelli, Robert De Niro | Musical | United Artists; music by Kander and Ebb |
| Oh, God! | Carl Reiner | George Burns, John Denver, Paul Sorvino, Teri Garr | Comedy | based on Avery Corman novel; 2 sequels |
| One on One | Lamont Johnson | Robby Benson, Annette O'Toole, G. D. Spradlin | Drama | co-written by Benson |
| Opening Night | John Cassavetes | Gena Rowlands, Ben Gazzara, John Cassavetes | Drama | |
| The Opening of Misty Beethoven | Radley Metzger | Constance Money, Jamie Gillis, Gloria Leonard | Adult film | |
| Orca | Michael Anderson | Richard Harris, Charlotte Rampling, Bo Derek | Adventure | Paramount; Dino De Laurentiis production |
| The Other Side of Midnight | Charles Jarrott | Marie-France Pisier, Susan Sarandon, John Beck, Clu Gulager, Michael Lerner, Raf Vallone | Drama | Fox; based on Sidney Sheldon novel |
| Outlaw Blues | Richard T. Heffron | Peter Fonda, Susan Saint James, John Crawford | Drama | Warner Bros. |
| The People That Time Forgot | Kevin Connor | Doug McClure, Sarah Douglas | Science fiction | A.I.P. |
| Pete's Dragon | Don Chaffey | Helen Reddy, Mickey Rooney, Shelley Winters | Animated | Disney |
| A Piece of the Action | Sidney Poitier | Bill Cosby, Sidney Poitier, James Earl Jones | Comedy | 3rd Cosby-Poitier pairing |
| Pine Canyon is Burning | Christian I. Nyby II | Kent McCord, Megan McCord, Shane Sinutko | Drama | TV film for NBC |
| Portrait of a Hitman | Allan A. Buckhantz | Rod Steiger, Jack Palance, Bo Svenson | Crime | |
| Pumping Iron | George Butler | Arnold Schwarzenegger, Lou Ferrigno | Documentary | Mr. Olympia contest |
| Race for Your Life, Charlie Brown | Phil Roman | | Animation | Paramount |
| Raggedy Ann & Andy: A Musical Adventure | Richard Williams | | Animation | 20th Century Fox |
| Raid on Entebbe | Irvin Kershner | Peter Finch, Martin Balsam, Yaphet Kotto, Charles Bronson, John Saxon, Jack Warden | Drama | made for TV; 10 Emmy nominations |
| The Rescuers | John Lounsbery | Voices of Eva Gabor, Bob Newhart, Geraldine Page | Animated | Disney |
| Rollercoaster | James Goldstone | George Segal, Richard Widmark, Henry Fonda | Thriller | Universal |
| Rolling Thunder | John Flynn | William Devane, Tommy Lee Jones, James Best | Drama | A.I.P. |
| Roots | Marvin J. Chomsky, John Erman, Gilbert Moses | LeVar Burton, Louis Gossett, Jr., John Amos, Ben Vereen, Cicely Tyson, Georg Stanford Brown, Richard Roundtree, O. J. Simpson, Leslie Uggams, Madge Sinclair, Ed Asner, Chuck Connors, Lloyd Bridges, Sandy Duncan | Drama, television miniseries | from the book by Alex Haley; 36 Emmy nominations |
| Roseland | James Ivory | Teresa Wright, Geraldine Chaplin, Christopher Walken | Romance | 3 stories |
| Ruby | Curtis Harrington | Piper Laurie, Stuart Whitman | Horror | Dimension |
| Run for the Roses | Henry Levin | Vera Miles, Stuart Whitman, Lisa Eilbacher | Drama | |
| Satan's Cheerleaders | Greydon Clark | Yvonne De Carlo, John Ireland | Comedy | |
| Saturday Night Fever | John Badham | John Travolta, Karen Lynn Gorney, Donna Pescow | Drama | Paramount; 4 Golden Globe nominations |
| Scott Joplin | Jeremy Kagan | Billy Dee Williams, Clifton Davis, Margaret Avery | Biopic | |
| Semi-Tough | Michael Ritchie | Burt Reynolds, Kris Kristofferson, Jill Clayburgh, Robert Preston, Brian Dennehy, Carl Weathers, Bert Convy | Comedy | United Artists; from Dan Jenkins novel |
| The Sentinel | Michael Winner | Chris Sarandon, Martin Balsam, Ava Gardner | Horror | Universal; from Jeffrey Konvitz novel |
| September 30, 1955 | James Bridges | Richard Thomas, Susan Tyrell | Drama | Universal |
| The Serpent's Egg | Ingmar Bergman | Liv Ullmann, David Carradine | Drama | Paramount; Bergman's only Hollywood film |
| Short Eyes | Robert M. Young | Bruce Davison, Jose Perez | Crime drama | |
| Sinbad and the Eye of the Tiger | Sam Wanamaker | Jane Seymour, Taryn Power, Patrick Wayne | Action | Columbia |
| Slap Shot | George Roy Hill | Paul Newman, Strother Martin, Michael Ontkean, Lindsay Crouse, Jennifer Warren, M. Emmet Walsh | Comedy | Universal |
| Smokey and the Bandit | Hal Needham | Burt Reynolds, Jackie Gleason, Sally Field, Jerry Reed | Comedy | 2nd to Star Wars at box office; 2 sequels |
| Sorcerer | William Friedkin | Roy Scheider, Francisco Rabal, Bruno Cremer | Thriller | The Wages of Fear remake |
| Speedtrap | Earl Bellamy | Joe Don Baker, Tyne Daly, Richard Jaeckel | Action | |
| Star Wars Episode IV: A New Hope aka Star Wars | George Lucas | Mark Hamill, Harrison Ford, Carrie Fisher, Alec Guinness | Science fiction | Fox; first Star Wars film released; won 6 Academy Awards |
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