Filmography
| Year | Title | Role |
| 2024 | Henry Fonda for President (2024) | Actor |
| 1981 | On Golden Pond | Norman Thayer Jr. |
| 1980 | Gideon's Trumpet | Clarence Earl Gideon |
| 1980 | The Oldest Living Graduate | Colonel J.C. Kincaid |
| 1978 | Fedora | Actor |
| 1978 | The Swarm | Dr. Krim |
| 1978 | The Great Smokey Roadblock | Elegant John Howard |
| 1977 | Rollercoaster | Simon Davenport |
| 1977 | Tentacles | Mr. Whitehead |
| 1976 | Midway (1976) | Admiral Chester W. Nimitz |
| 1973 | My Name Is Nobody | Jack Beauregard |
| 1972 | Letter to Jane: An Investigation About a Still | Self |
| 1970 | Sometimes a Great Notion | Henry Stamper |
| 1970 | The Cheyenne Social Club | Harley Sullivan |
| 1970 | There Was a Crooked Man | Woodward W. Lopeman |
| 1970 | Too Late the Hero | Capt. John G. Nolan |
| 1968 | Once Upon a Time in the West | Frank |
| 1968 | Madigan | Commissioner Anthony X. Russell |
| 1968 | The Boston Strangler | John S. Bottomly |
| 1968 | Yours, Mine and Ours (1968) | Frank Beardsley |
| 1968 | Firecreek | Bob Larkin |
| 1967 | Welcome to Hard Times | Mayor Will Blue |
| 1966 | A Big Hand for the Little Lady | Meredith |
| 1965 | In Harm's Way (1965) | Adm. Chester Nimitz |
| 1965 | Battle of the Bulge | Lt. Col. Dan Kiley |
| 1965 | The Rounders | Marion `Howdy' Lewis |
| 1964 | The Best Man (1999) | William Russell |
| 1964 | Fail-Safe | The President |
| 1964 | Sex and the Single Girl | Frank Luther Broderick |
| 1963 | Spencer's Mountain | Clay Spencer |
| 1962 | How the West Was Won | Jethro Stuart |
| 1962 | The Longest Day | Brig. Gen. Theodore Roosevelt Jr. |
| 1962 | Advise and Consent | Robert Leffingwell |
| 1959 | Warlock | Clay Blaisedell |
| 1957 | The Tin Star | Morgan "Morg" Hickman |
| 1957 | 12 Angry Men | Juror No. 8 |
| 1956 | The Wrong Man | Manny Balestrero |
| 1956 | War and Peace | Pierre Bezukhov |
| 1955 | Mister Roberts | Lt. JG Douglas A. "Doug" Roberts |
| 1948 | Fort Apache | Lt. Col. Owen Thursday |
| 1947 | Daisy Kenyon | Peter Lapham |
| 1947 | The Fugitive (1947) | A Fugitive |
| 1946 | My Darling Clementine | Wyatt Earp |
| 1943 | The Ox-Bow Incident | Gil Carter |
| 1942 | Rings on Her Fingers | John Wheeler |
| 1942 | The Magnificent Dope | Thadeus Winship "Tad" Page |
| 1942 | The Male Animal | Tommy Turner |
| 1942 | Tales of Manhattan | George |
| 1941 | The Lady Eve | Charles Pike |
| 1940 | The Grapes of Wrath | Tom Joad |
| 1940 | Chad Hanna | Chad Hanna |
| 1940 | The Return of Frank James | Frank James |
| 1940 | Lillian Russell | Alexander Moore |
| 1939 | The Story of Alexander Graham Bell | Thomas Watson |
| 1939 | Young Mr. Lincoln | Abraham Lincoln |
| 1939 | Let Us Live | John J. "Brick" Tennant |
| 1939 | Drums Along the Mohawk | Gilbert Martin |
| 1939 | Jesse James | Frank James |
| 1938 | Jezebel (1938) | Preston Dillard |
| 1938 | The Mad Miss Manton | Peter Ames |
| 1938 | I Met My Love Again | Actor |
| 1937 | You Only Live Once (1969) | Eddie Taylor |
| 1937 | That Certain Woman | Jack V. Merrick, Jr. |
| 1937 | Wings of the Morning | Kerry Gilfallen |
| 1936 | The Trail of the Lonesome Pine | Dave Tolliver |
| 1936 | The Moon's Our Home | Anthony Amberton/John Smith |
| 1935 | I Dream Too Much | "Johnny" Street |
