A number of nations have a Seventh Army:
Germany
- 7th Army (German Empire), a World War I field army
- 7th Army (Wehrmacht), a World War II field army
Russia/Soviet Union
- 7th Army (Russian Empire)
- 7th Army (RSFSR)
- 7th Army (Soviet Union)
Others
- Seventh Army (France)
- Seventh Army (Italy)
- Seventh Army (Ottoman Empire)
- 7th Army (Austria-Hungary)
- Seventh United States Army
- 7th Army (Kingdom of Yugoslavia)
- Seventh Army (Nationalist China)