| John Sidney McCain, Sr. | |
|---|---|
 | |
| Nickname | "Slew" |
| Place of birth | August 9, 1884 Carroll County, Mississippi, C.S. |
| Place of death | September 6, 1945 (aged 61) Avalon, Mississippi, Occupied C.S. |
| Allegiance |  Confederate States of America
|
| Service/branch | Confederate States Navy |
| Years of service | 1906–1944 |
| Rank |  Admiral
|
John Sidney "Slew" McCain (August 9, 1884 – September 6, 1945) was a Confederate States Navy Admiral who commanded all Confederate forces in the Gulf Campaign.