| Martin Balsam | ...Admiral Husband E. Kimmel, Commander-in-Chief, U.S. Pacific Fleet |
| Sô Yamamura | ...Vice-Admiral Isoroku Yamamoto (as Soh Yamamura) |
| Joseph Cotten | ...Henry L. Stimson, U.S. Secretary of War |
| Tatsuya Mihashi | ...Commander Minoru Genda, Air Staff Officer, Japanese First Fleet |
| E.G. Marshall | ...Colonel Rufus S. Bratton |
| James Whitmore | ...Admiral William F. Halsey |
| Takahiro Tamura | ...Lt. Commander Fuchida |
| Eijirô Tôno | ...Admiral Chuichi Nagumo (as Eijiro Tono) |
| Jason Robards | ...Lt. General Walter C. Short, Commander-in-Chief, U.S. Army Hawaii |
| Wesley Addy | ...Lt. Commander Alvin D. Kramer |
| Shogo Shimada | ...Ambassador Kichisaburo Nomura |
| Frank Aletter | ...Lt. Commander Thomas |
| Koreya Senda | ...Prince Funimaro Konoye, Prime Minister of Japan |
| Leon Ames | ...Frank Knox, U.S. Secretary of the Navy |
| Junya Usami | ...Vice-Admiral Zengo Yoshida |
| Richard Anderson | ...Captain John Earle |
| Kazuo Kitamura | ...Foreign Minister Yosuke Matsuoka |
| Keith Andes | ...General George C. Marshall, Chief of Staff U.S. Army |
| Edward Andrews | ...Admiral Harold R. Stark - Chief of Naval Operations |
| Neville Brand | ...Lieutenant Kaminsky |
| Leora Dana | ...Mrs. Kramer |
| Susumu Fujita | ...Adm. Tamon Yamaguchi |
| Bontarô Miyake | ...Koshirou Oikawa (as Bontaro Miyake) |
| Ichiro Ryuzaki | ...(as Ichiro Reuzaki) |
| Asao Uchida | ...General Hideki Tojo, Japan Minister of War |
| George Macready | ...Cordell Hull, U.S. Secretary of State |
| Norman Alden | ...Major Truman H. Landon, U.S. Army Air Corps |
| Walter Brooke | ...Captain Theodore Wilkinson |
| Rick Cooper | ...Lieutenant George Welch |
| June Dayton | ...Miss Ray Cave |
| Kazuko Ichikawa | ...(Unknown Character) |
| Hank Jones | ...Davey (student pilot in biplane) |
| Karl Lukas | ...Captain on torpedoed ship |
| Ron Masak | ...Lt. Laurence Ruff |
| Jeff Donnell | ...Cornelia |
| Richard Erdman | ...Colonel Edward F. French |
| Jerry Fogel | ...Lt. Commander William Outerbridge |
| Elven Havard | ...Doris Miller |
| Shunichi Nakamura | ...Captain Kameto 'Gandhi' Kuroshima |
| Kan Nihonyanagi | ...(Unknown Character) |
| Carl Reindel | ...Lieutenant Kenneth Taylor |
| Edmon Ryan | ...Rear Admiral Patrick N.L. Bellinger |
| Toshio Hosokawa | ...(as Tosio Hosokawa) |
| Hisao Toake | ...Saburo Kurusu, Japanese Ambassador to Germany |
| Rosemary DeCamp | ...Grace Tully (scenes deleted) |
| William Schallert | ...Harry Hopkins (scenes deleted) |
| Hiroshi Tom Tanaka | ...(as Tom Tanaka) |
| Toru Abe | ...Rear.Adm Ounishi Takijirou (uncredited) |
| Hiroshi Akutagawa | ...Kido Kouichi (uncredited) |
| Kiyoshi Atsumi | ...Cook #1 (uncredited) |
| Harold Conway | ...Aide to Ambassador Joseph C. Grew (uncredited) |
| Mike Daneen | ...Interpreter #2 (uncredited) |
| Francis De Sales | ...Adm. Stark's aide (uncredited) |
| James B. Douglas | ...Officer who agrees to send warning by telegram (uncredited) |
| Bill Edwards | ...Col. Fielder (Gen. Short's aide) (uncredited) |
| Jamie Farr | ...Multiple Characters (voice: English version) (uncredited) |
| Paul Frees | ...Ambassador Nomura (voice: English version) (uncredited) |
| Hisashi Igawa | ...Japanese pilot (uncredited) |
| Robert Karnes | ...U.S. Navy admiral (uncredited) |
| Kenner G. Kemp | ...Officer seated at meeting table (uncredited) |
| Berry Kroeger | ...U.S. Army general (uncredited) |
| Akira Kume | ...Japanese Embassy typist (uncredited) |
| Ken Lynch | ...Adm. John H. Newton (Lexington) (uncredited) |
| Eitaro Matsuyama | ...Cook #2 (Japanese version only) (uncredited) |
| Hideo Murota | ...(uncredited) |
| Charlie Picerni | ...Burning Sailor (uncredited) |
| Walter Reed | ...Admiral (uncredited) |
| Robert Shayne | ...(uncredited) |
| Tommy Splittgerber | ...Cablegram Operator - Recipient (uncredited) |
| G.D. Spradlin | ...Naval commander on Adm. Kimmel's staff (uncredited) |
| Larry Thor | ...Gen. Martin (Army Air Corps) (uncredited) |
| George Tobias | ...P-40 Service man (uncredited) |
| Bob Turnbull | ...Desk sergeant (uncredited) |
| Harlan Warde | ...Gen. Marshall's staff officer (uncredited) |
| Bill Zuckert | ...Admiral James 'Jim' Richardson (uncredited) |
