A-B
| Title | Director | Cast | Genre | Notes |
|---|---|---|---|---|
| A-Lad-In His Lamp | Robert McKimson | Bugs Bunny | Animated | Warner Bros. |
| Abbott and Costello Meet Frankenstein | Charles Barton | Bud Abbott, Lou Costello | Comedy | Universal Pictures |
| Act of Violence | Fred Zinnemann | Van Heflin, Robert Ryan | Film noir | MGM |
| Adventures of Don Juan | Vincent Sherman | Errol Flynn, Viveca Lindfors | Adventure | Warner Bros. |
| Adventures of Frank and Jesse James | Yakima Canutt | Clayton Moore | Western, Serial | Republic Pictures |
| Alias a Gentleman | Harry Beaumont | Wallace Beery | Romantic comedy | |
| The Amazing Mr. X | Bernard Vorhaus | Turhan Bey | Thriller | |
| Another Part of the Forest | Michael Gordon | Fredric March, Florence Eldridge | Drama | |
| Arch of Triumph | Lewis Milestone | Ingrid Bergman, Charles Boyer | War | United Artists |
| B.F.'s Daughter | Robert Z. Leonard | Barbara Stanwyck, Van Heflin, Charles Coburn | Drama | MGM |
| Behind Locked Doors | Budd Boetticher | Lucille Bremer, Richard Carlson | Film noir | |
| Berlin Express | Jacques Tourneur | Merle Oberon, Robert Ryan | Film noir | RKO Pictures |
| The Big Clock | John Farrow | Charles Laughton, Ray Milland | Film noir | Paramount Pictures |
| Bill and Coo | Dean Riesner | Nature | ||
| The Black Arrow: A Tale of the Two Roses | Louis Hayward | Adventure | ||
| Black Bart | George Sherman | Dan Duryea, Yvonne De Carlo | Western | |
| Blood on the Moon | Robert Wise | Robert Mitchum, Robert Preston | Western | RKO Pictures |
| Bob and Sally | Erle C. Kenton | Educational | Universal Studios | |
| Bodyguard | Richard Fleischer | Lawrence Tierney, Priscilla Lane | Film noir | RKO |
| The Boy with Green Hair | Joseph Losey | Dean Stockwell | Comedy, Drama | |
| Brideless Groom | Edward Bernds | Animated short | Columbia Pictures | |
| Buccaneer Bunny | Friz Freleng | Bugs Bunny | Animated short | Warner Bros. |
| Bugs Bunny Rides Again | Friz Freleng | Bugs Bunny | Animated short | Warner Bros. |
Read more about this topic: List Of American Films Of 1948