Army of the Rhine may refer to:
- Several French armies (Armée du Rhin):
- Army of the Rhine (1791–1795)
- Merged into the Army of the Rhine and Moselle from 1795 to 1797
- Army of the Rhine (1870)
- Army of the Rhine (1919–30)
- First Army, called the Army of the Rhine and Danube (1943–45)
- Army of the Rhine (1791–1795)
- British Army of the Rhine (BAOR), an army of occupation in Germany post-1918