| 2016 | Star Trek: Inside the Roddenberry Vault | (archive footage) | ★ 5.7 |
| 2007 | Die Pixar Story | Leonard McCoy (archive footage) | ★ 7.6 |
| 2006 | 40 Years of Star Trek | Self | ★ 4.3 |
| 1998 | Der tapfere kleine Toaster fliegt zum Mars | Viking 1 (voice) | ★ 5.6 |
| 1997 | Trekkies | Self | ★ 6.3 |
| 1996 | The Making of Star Trek Deep Space Nine Trials And Tribble-ations | Self | ★ 0.0 |
| 1995 | William Shatner's Star Trek Memories | Self | ★ 4.3 |
| 1994 | William Shatner: Captain's Log | Self | ★ 0.0 |
| 1994 | Star Trek: A Captain's Log | Himself | ★ 5.5 |
| 1993 | A Conversation with DeForest Kelley | Self | ★ 0.0 |
| 1991 | Star Trek VI - Das unentdeckte Land | Dr. Leonard 'Bones' McCoy | ★ 7.0 |
| 1991 | 25 Jahre Star Trek | Self | ★ 5.7 |
| 1989 | Star Trek V - Am Rande des Universums | Dr. Leonard 'Bones' McCoy | ★ 5.7 |
| 1986 | Star Trek IV - Zurück in die Gegenwart | McCoy | ★ 7.1 |
| 1984 | Star Trek III - Auf der Suche nach Mr. Spock | Dr. Leonard 'Bones' McCoy | ★ 6.6 |
| 1982 | Star Trek II - Der Zorn des Khan | Dr. Leonard 'Bones' McCoy | ★ 7.5 |
| 1979 | Star Trek - Der Film | Dr. Leonard 'Bones' McCoy | ★ 6.5 |
| 1975 | The Star Trek Dream | Self | ★ 1.0 |
| 1972 | Rabbits | Elgin Clark | ★ 4.4 |
| 1972 | Der Einsame | Ben Tully | ★ 5.4 |
| 1966 | Star Trek: The Menagerie | Dr. McCoy | ★ 0.0 |
| 1966 | Wyoming Bravados | Bill Rile | ★ 6.4 |
| 1966 | Die Männer aus Bonanza - Sie ritten wie der Wind | Tully | ★ 6.7 |
| 1965 | Die Apachen | Toby Jack Saunders | ★ 6.4 |
| 1965 | Dreimal nach Mexiko | Mr. Turner | ★ 5.6 |
| 1965 | Revolver diskutieren nicht | Guy Tavenner | ★ 6.4 |
| 1965 | Schwarze Sporen | Sheriff Dal Nemo | ★ 6.0 |
| 1964 | Wohin die Liebe führt | Sam Corwin | ★ 6.2 |
| 1963 | Im Sattel ritt der Tod | Amos Troop | ★ 5.8 |
| 1959 | Warlock | Curley Burne | ★ 6.7 |
| 1958 | Der Schatz des Gehenkten | Wexler | ★ 6.6 |
| 1957 | Das Land des Regenbaums | Southern Officer | ★ 6.4 |
| 1957 | The Edge of Innocence | Lambert | ★ 0.0 |
| 1957 | Zwei rechnen ab | Morgan Earp | ★ 7.0 |
| 1956 | Tension at Table Rock | Jim Breck | ★ 5.8 |
| 1956 | Der Mann im grauen Flanell | Medic (uncredited) | ★ 6.8 |
| 1955 | Unvollendete Liebe | Jim - Hotel Clerk | ★ 3.5 |
| 1955 | Schakale der Unterwelt | Edward Clary (as DeForest Kelly) | ★ 6.4 |
| 1955 | Tokio-Story | Charlie (uncredited) | ★ 6.1 |
| 1954 | Duffy of San Quentin | Eddie Lee | ★ 6.0 |
| 1953 | Taxi | Fred (uncredited) | ★ 6.4 |
| 1950 | Die Männer | Dr. Sherman (uncredited) | ★ 7.0 |
| 1950 | Speak No Evil | Ted | ★ 0.0 |
| 1949 | Malaya | Lt. Glenson (uncredited) | ★ 6.5 |
| 1949 | Duke of Chicago | 'Ace' Martin | ★ 0.0 |
| 1949 | Ambassador for Christ | Aram | ★ 0.0 |
| 1948 | Rebellion im grauen Haus | Smalley | ★ 6.0 |
| 1947 | Beyond Our Own | Bob Rogers | ★ 0.0 |
| 1947 | Mädchen für Hollywood | Bob Kirby | ★ 6.1 |
| 1947 | Fear in the Night | Vince Grayson | ★ 5.4 |
| 1945 | Time to Kill | Peter | ★ 0.0 |
