Alexander Slidell MacKenzie | |
|---|---|
 | |
| Born | January 24, 1842 |
| Died | June 13, 1867 (aged 25) Kenting, Taiwan |
| Allegiance | United States of America Union |
| Branch |  United States Navy |
| Years of service | 1859–1867 |
| Rank |  Lieutenant commander |
| Commands | USS Winona |
| Battles / wars | American Civil War Formosa Expedition † |
| Relations | Alexander Slidell Mackenzie (father) Matthew C. Perry (Uncle) |
Alexander Slidell MacKenzie (January 24, 1842 – June 13, 1867) was an officer in the United States Navy during the American Civil War.