| First Lady |
Mary Lincoln |
| Vice President |
Hannibal Hamlin (1861–1865) |
| Vice President |
Andrew Johnson (1865) |
| Secretary of State |
William H. Seward (1861–1865) |
| Secretary of the Interior |
John P. Usher (1863–1865) |
| Secretary of the Interior |
James Harlan (1865) |
| Secretary of the Interior |
Caleb B. Smith (1861–1863) |
| Attorney General |
Edward Bates (1861–1864) |
| Attorney General |
James Speed (1864–1865) |
| Postmaster General |
Montgomery Blair (1861–1864) |
| Postmaster General |
William Dennison (1864–1865) |
| Secretary of the Treasury |
Salmon P. Chase (1861–1864) |
| Secretary of the Treasury |
William P. Fessenden (1864–1865) |
| Secretary of the Treasury |
Hugh McCulloch (1865) |
| Secretary of the Navy |
Gideon Welles (1861–1865) |
| Secretary of War |
Simon Cameron (1861–1862) |
| Secretary of War |
Edwin M. Stanton (1862–1865) |