| Title | Director |
| Start Date | 1942-06-13 |
| End Date | 1945-10-01 |
| Is Current | no |
| Board member | no |
| Executive | yes |
| Employee | yes |
| Notes | 1942 13 June President Franklin D. Roosevelt signs a military order establishing the Office of Strategic Services (OSS) and naming William J. Donovan as its Director. Donovan remained a civilian until 24 March 1943, when he was appointed brigadier general. He advanced to the rank of major general on 10 November 1944. 1945 1 October President Harry S. Truman's Executive Order 9621 abolishes the OSS and transfers its functions to the State and War Departments. |