| 角色 | 饰演者 | 角色介绍 |
| Dr. Paul Bradley | 肖恩·康纳利 | |
| Tatiana Nikolaevna Donskaya | 娜塔利·伍德 | |
| Harry Sherwood NASA | 卡尔·莫尔登 | |
| Dr. Alexei Dubov | 布耐恩·凯斯 | |
| Major General Adlon | 马丁·兰道 | |
| Sir Michael Hughes | 特瑞沃·霍华德 | |
| Secretary of Defense | Richard A. Dysart | |
| The President | 亨利·方达 | |
| Lt. Gen. Easton | Joseph Campanella | |
| Rolf Manheim | Bo Brundin | |
| Jan Watson | Katherine De Hetre | |
| Alan Marshall | James G. Richardson | |
| Bill Hunter | Roger Robinson | |
| Sam Mason | Michael Zaslow | |
| Peter Watson | John McKinney | |
| Astronaut Tom Easton | John Findlater | |
| Astronaut Bill Frager | Paul Tulley | |
| Astronaut Michael McKendrick | Allen Williams | |
| Helen Bradley | Bibi Besch | |
| Russian Premier (as Gregory Gay) | Gregory Gaye | |
| Yamashiro | Clyde Kusatsu | |
| Coast Guard Officer | Burke Byrnes | |
| Bartender (as Joe Medalis) | Joseph G. Medalis | |
| Guard | Charles Bartlett | |
| Guard | Raymond O'Keefe | |
| Army Captain | Henry Olek | |
| UN President | Peter Bourne | |
| Canadian U.N. Representative | Stanley Mann | |
| British U.N. Representative | 罗纳德·尼姆 | |
| Russian U.N. Representative | Philip Sterling | |
| Ghana U.N. Representative | Arthur Adams |
