10. Thale
Thales, located in Paris, has been contracted to deliver modern radar and fire control systems to the British Royal Navy's new aircraft carriers, as well as to keep French ships up to date.
9. Leonardo
After 68 years as Italy's greatest armaments producer, the firm, formally known as Finmeccanica, changed its name.
8. L-3 Technologie
L-3 Technologies, founded in 1996, is a prominent provider of intelligence, surveillance, and reconnaissance networks to customers in the military, homeland security, and commercial aviation.
7. EADS/Airbus Group
The Airbus Group was a key partner in the development of the Eurofighter Typhoon, which has been accepted by numerous European air forces.
6. General Dynamic
General Dynamics manufactures a major amount of the world's arsenal, including computer systems and displays, Stinger missiles, and Tomahawk cruise missiles.
5. Northrop Grumman
Northrop Grumman, formed by the merging of Northrop and Grumman, is best known for the B-2 Spirit stealth bomber, which can deliver both conventional and thermonuclear missiles in a stealth configuration.
4. BAE System
BAE Systems is one of the main suppliers to the US Department of Defense, formed by the £7.7 billion merger of two British corporations.
3. Raytheon
The Massachusetts-based defence conglomerate is well recognised as the world's largest maker of guided missiles.
2. Boeing
Though Boeing is best known for producing commercial jetliners such as the 747, 777, and 787, the company also manufactures refuelling and anti-submarine aircraft, fighter jets, and electronic warfare planes.
1. Lockheed Martin
Thales, located in Paris, has been contracted to deliver modern radar and fire control systems to the British Royal Navy's new aircraft carriers, as well as to keep French ships up to date.