United Defense
| Founded | January 1994 |
|---|---|
| Defunct | June 24, 2005 |
| Fate | Acquired by BAE Systems |
| Successor | BAE Systems Land & Armaments |
| Headquarters | Arlington, Virginia, US |
United Defense Industries (UDI) was an American defense contractor which became part of BAE Systems Land & Armaments after being acquired by BAE Systems in 2005. The company produced combat vehicles, artillery, naval guns, missile launchers and precision munitions.