M-R
| Title | Director | Cast | Genre | Notes |
|---|---|---|---|---|
| The Man from Laramie | Anthony Mann | James Stewart, Arthur Kennedy | Western | |
| The Man with the Golden Arm | Otto Preminger | Frank Sinatra, Eleanor Parker, Kim Novak | Drama | |
| Man Without a Star | King Vidor | Kirk Douglas, Jeanne Crain, Claire Trevor | Western | |
| Many Rivers to Cross | Roy Rowland | Robert Taylor, Eleanor Parker | Comedy Western | |
| Marty | Delbert Mann | Ernest Borgnine, Betsy Blair | Drama | Academy Award: Best Picture, Best Actor |
| Mister Roberts | John Ford | Henry Fonda, James Cagney, Jack Lemmon, William Powell, Betsy Palmer, Ward Bond | War | Academy Award: Best Supporting Actor |
| Moonfleet | Fritz Lang | George Sanders, Stewart Granger | Drama | |
| Mr. Arkadin | Orson Welles | Orson Welles, Akim Tamiroff | Drama | |
| My Sister Eileen | Richard Quine | Betty Garrett, Janet Leigh | Musical | Remake of the 1942 film |
| The Night of the Hunter | Charles Laughton | Robert Mitchum, Shelley Winters | Suspense | |
| Not as a Stranger | Stanley Kramer | Robert Mitchum, Frank Sinatra | Drama | |
| Oklahoma! | Fred Zinnemann | Gordon MacRae, Shirley Jones, Rod Steiger, Gloria Grahame, Eddie Albert, Gene Nelson | Musical | Based on the 1943 stage show by Rodgers and Hammerstein |
| One Froggy Evening | Animation | |||
| Panther Girl of the Kongo | Franklin Adreon | Phyllis Coates | Adventure | |
| Pete Kelly's Blues | Jack Webb | Jack Webb, Janet Leigh | Drama | |
| The Phantom from 10,000 Leagues | Dan Milner | Kent Taylor | Science Fiction | |
| The Phenix City Story | Phil Karlson | John McIntire, Richard Kiley | Drama | |
| Picnic | Joshua Logan | William Holden, Kim Novak, Rosalind Russell, Susan Strasberg, Cliff Robertson | Drama | |
| The Pied Piper of Cleveland | Arthur Cohen | Musical | ||
| Prince of Players | Philip Dunne | Richard Burton, John Derek | Drama | |
| The Private War of Major Benson | Jerry Hopper | Charlton Heston, Julie Adams | Comedy | |
| The Prodigal | Richard Thorpe | Lana Turner, Louis Calhern | Drama | |
| Queen Bee | Ranald MacDougall | Joan Crawford, Fay Wray | Drama | |
| Rabbit Rampage | Chuck Jones | Looney Tunes | Animation | |
| Rage at Dawn | Tim Whelan | Randolph Scott, Forrest Tucker | Western | |
| The Rains of Ranchipur | Jean Negulesco | Lana Turner, Richard Burton | Drama | |
| Rebel Without a Cause | Nicholas Ray | James Dean, Natalie Wood | Drama | Warner Bros. |
| Revenge of the Creature | Jack Arnold | John Agar | Science Fiction | Clint Eastwood's first film (uncredited) |
| Roman-Legion Hare | Friz Freleng | Looney Tunes | Animation | |
| The Rose Tattoo | Daniel Mann | Anna Magnani, Burt Lancaster | Drama |
Read more about this topic: List Of American Films Of 1955