| Martin Balsam | Adm. Husband E. Kimmel |
| Jason Robards | Lt. Gen. Walter C. Short |
| Sô Yamamura | Adm. Isoroku Yamamoto |
| Joseph Cotten | Secretary of War Henry L. Stimson |
| Tatsuya Mihashi | Cmdr. Minoru Genda |
| E.G. Marshall | Lt. Col. Rufus G. Bratton |
| Takahiro Tamura | Lt. Cmdr. Mitsuo Fuchida |
| James Whitmore | Adm. William F. 'Bull' Halsey |
| Eijirô Tono | Vice-Adm. Chuichi Nagumo |
| Wesley Addy | Lt. Cmdr. Alvin D. Kramer |
| Shogo Shimada | Ambassador Kichisaburo Nomura |
| Frank Aletter | Lt. Col. Thomas |
| Koreya Senda | Prince Duke Fumimaro Konoye |
| Leon Ames | Secretary of the Navy Frank Knox |
| Junya Usami | Adm. Zengo Yoshida |
| Richard Anderson | Capt. John Earle |
| Kazuo Kitamura | Foreign Minister Yosuke Matsuoka |
| Keith Andes | Gen. George C. Marshall |
| Edward Andrews | Adm. Harold R. Stark |
| Neville Brand | Lt. Kaminsky |
| Leora Dana | Mrs. Kramer |
| Asao Uchida | Gen. Hideki Tojo |
| George Macready | Secretary of State Cordell Hull |
| Norman Alden | Maj. Truman Landon |
| Walter Brooke | Capt. Theodore S. Wilkinson |
| Rick Cooper | Lt. George Welch |
| June Dayton | Miss Ray Cave (code breaker) |
| Jeff Donnell | Cornelia |
| Richard Erdman | Col. Edward F. French |
| Jerry Fogel | Lt. Cmdr. William W. Outerbridge |
| Shunichi Nakamura | Kameto Kuroshima |
| Carl Reindel | Lt. Kenneth M. Taylor |
| Edmon Ryan | Rear Adm. Patrick N.I. Bellinger |
| Hisao Toake | Ambassador Saburo Kurusu |
| Susumu Fujita | Adm. Tamon Yamaguchi |
| Harlan Warde | Gen. Marshall's staff officer |
| Robert Karnes | U.S. Navy admiral |
| Francis De Sales | Adm. Stark's aide |
| Berry Kroeger | U.S. Army general |
| Elven Havard | Dorie Miller |
| Meredith 'Tex' Weatherby | Ambassador Grew |
| Mike Daneen | Interpreter #2 |
| Bontarô Miyake | Koshirou Oikawa |
| Hank Jones | Davey (student pilot in biplane) |
| Karl Lukas | Captain on torpedoed ship |
| Ron Masak | Lt. Laurence Ruff |
| Eitaro Matsuyama | Cook #2 (Japanese version only) |
| James B. Douglas | Officer who agrees to send warning by telegram |
| Bill Edwards | Col. Fielder (Gen. Short's aide) |
| Jamie Farr | English-language voice characterizations for multiple characters |
| Paul Frees | English-language voice characterization for Ambassador Nomura |
| Kiyoshi Atsumi | Cook #1 |
| Hisashi Igawa | Japanese pilot |
| Akira Kume | Japanese Embassy typist |
| Ken Lynch | Adm. John H. Newton (Lexington) |
| G.D. Spradlin | Naval commander on Adm. Kimmel's staff |
| Larry Thor | Gen. Martin (Army Air Corps) |
| Bob Turnbull | Desk sergeant |
| Hiroshi Akutagawa | Kido Kouichi |
| Toru Abe | Rear.Adm Ounishi Takijirou |
| Harold Conway | Aide to Ambassador Joseph C. Grew |
