| First Corps, Army of Tennessee | |
|---|---|
 The Polk pattern battle flag | |
| Active | 1862 – 1865 |
| Disbanded | April 26, 1865 |
| Country |  Confederate States |
| Branch |  Confederate States Army |
| Role | Headquarters |
| Size | Corps |
| Part of | Army of Tennessee |
| Nickname(s) |
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| Engagements | American Civil War |
| Commanders | |
| Commanding officers |
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The First Corps, Army of Tennessee, commonly known as Polk's Corps, Cheatham's Corps, or Hardee's Corps, was a corps of the Army of Tennessee.