| Award | Category | Nominee(s) | Result |
|---|---|---|---|
| Academy Awards[26][27] | Best Picture | Alan J. Pakula | Nominated |
| Best Director | Robert Mulligan | Nominated | |
| Best Actor | Gregory Peck | Won | |
| Best Supporting Actress | Mary Badham | Nominated | |
| Best Screenplay – Based on Material from Another Medium | Horton Foote | Won | |
| Best Art Direction – Black-and-White | Alexander Golitzen, Henry Bumstead and Oliver Emert | Won | |
| Best Cinematography – Black-and-White | Russell Harlan | Nominated | |
| Best Music Score – Substantially Original | Elmer Bernstein | Nominated | |
| American Cinema Editors Awards | Best Edited Feature Film | Aaron Stell | Nominated |
| British Academy Film Awards[28] | Best Film from any Source | Nominated | |
| Best Foreign Actor | Gregory Peck | Nominated | |
| Cannes Film Festival[29] | Palme d'Or | Robert Mulligan | Nominated |
| Gary Cooper Award | Won | ||
| David di Donatello Awards | Best Foreign Actor | Gregory Peck | Won |
| Directors Guild of America Awards[30] | Outstanding Directorial Achievement in Motion Pictures | Robert Mulligan | Nominated |
| Golden Globe Awards[31] | Best Motion Picture – Drama | Nominated | |
| Best Actor in a Motion Picture – Drama | Gregory Peck | Won | |
| Best Director – Motion Picture | Robert Mulligan | Nominated | |
| Best Original Score – Motion Picture | Elmer Bernstein | Won | |
| Best Film Promoting International Understanding | Won | ||
| Laurel Awards | Top General Entertainment | Won | |
| Top Male Dramatic Performance | Gregory Peck | Nominated | |
| Top Female Supporting Performance | Mary Badham | Nominated | |
| National Film Preservation Board[32] | National Film Registry | Inducted | |
| New York Film Critics Circle Awards[33] | Best Film | Nominated | |
| Best Screenplay | Horton Foote | Nominated | |
| Online Film & Television Association Awards[34] | Hall of Fame – Motion Picture | Won | |
| Producers Guild of America Awards[35] | PGA Hall of Fame – Motion Pictures | Alan J. Pakula | Won |
| Writers Guild of America Awards[36] | Best Written American Drama | Horton Foote | Won |
In 1995, To Kill a Mockingbird was selected for preservation in the United States National Film Registry by the Library of Congress as being "culturally, historically, or aesthetically significant".[37] It is also Robert Duvall's big-screen debut, as the misunderstood recluse Boo Radley. Duvall was cast on the recommendation of screenwriter Horton Foote, who met him at Neighborhood Playhouse in New York City where Duvall starred in a 1957 production of Foote's play, The Midnight Caller.[38]
In 2007, Hamilton was honored by the Harlem community for her part in the movie. She was the last surviving African-American adult who had a speaking part in the movie. When told of the award, she said, "I think it is terrific. I'm very pleased and very surprised".[39]
The American Film Institute named Atticus Finch the greatest movie hero of the 20th century.[40] Additionally, the AFI ranked the movie second on their 100 Years... 100 Cheers list, behind It's a Wonderful Life.[41] The film was ranked number 34 on AFI's list of the 100 greatest movies of all time,[42] but moved up to number 25 on the 10th Anniversary list.[43] In June 2008, the AFI revealed its "10 Top 10" – the best ten films in ten "classic" American film genres – after polling over 1,500 people from the creative community. To Kill a Mockingbird was acknowledged as the best film in the courtroom drama genre.[44]
American Film Institute lists:
- AFI's 100 Years...100 Movies – #34[42]
- AFI's 100 Years...100 Heroes & Villains:
- Atticus Finch – #1 Hero[40]
- AFI's 100 Years of Film Scores – #17[45]
- AFI's 100 Years...100 Cheers – #2[41]
- AFI's 100 Years...100 Movies: 10th Anniversary Edition – #25[43]
- AFI's 10 Top 10 – #1 Courtroom Drama[44]
