The Boeing Company - $42.5bn
The Boeing Company earned revenues of $42.5bn in the first half of 2014, while its net profit during the same period was $2.61bn.
Headquartered in Chicago, The Boeing Company is the biggest combined manufacturer of commercial jets and military aircraft. Its business segments include Defence, Space & Security; Commercial Airplanes; Boeing Capital; and Shared Services Group.
The company's product line encompasses military aircraft such as F/A-18 Hornet, F-15E Eagle, EA-18G Growler, C-17 Globemaster III, P-8 Poseidon, KC-767 tanker, CH-47 Chinook, V-22 Osprey and AH-64 Apache, as well as passenger aircraft such as the 737, 747, 767, 777 and 787.
Airbus Group - $36bn
Airbus Group's (formerly EADS) revenue in the first half of 2014 was $36bn, while net income was $1.52bn.
The European aerospace and defence conglomerate includes Airbus, Airbus Defence and Space, and Airbus Helicopters, and has a strong employee base of 140,000 people across the globe.
The Group's diverse product portfolio includes commercial and military fixed-wing aircraft and helicopters such as Eurofighter Typhoon, A380, A350 XWB, A330 MRTT and A400M, as well as satellites, satellite launchers and global security solutions and systems.
Lockheed Martin - $21.95bn
Lockheed Martin, one of the world's largest defence manufacturers, reported net sales of $21.95bn for the first half of 2014. Net earnings of the company stood at $1.82bn for the same period.
Lockheed Martin's business segments include Aeronautics, Information Systems & Global Solutions (IS&GS), Missiles and Fire Control, Mission Systems and Training and Space Systems. The company, based in Bethesda, Maryland, employs about 116,000 people worldwide.
It develops and produces Aircraft, Land Vehicles, Unmanned Systems, Missiles and Guided Weapons, Missile Defence Systems, Sensors and Radars, Naval Systems, Satellites, Launch Vehicles and Spacecraft, IT Systems and emerging technologies.
United Technologies Corporation (UTC) - $17.3bn
United Technologies recorded net sales of $17.3bn from its aerospace and defence businesses, which accounted for over 50% of its net sales in the first half of 2014.
United Technologies owns Pratt & Whitney, UTS Aerospace Systems and Sikorsky apart from UTC Building & Industrial Systems. The company employs about 212,400 people worldwide.
UTC's diversified product base constitutes commercial and military helicopters, aircraft engines and propulsion systems, aircraft systems and components.
General Dynamics Corporation - $14.73bn
General Dynamics Corporation earned revenues of $14.73bn in the first half of 2014, becoming the fifth biggest aerospace and defence company. The net earnings for the same period stood at $1.13bn.
The four core business groups of General Dynamics are Aerospace, Combat Systems, Information Systems and Technology, and Marine Systems. The company offers products and services in business aviation; combat vehicles, weapons systems and munitions; shipbuilding; and communication and information technology systems and solutions.
General Dynamics serves defence and commercial customers in more than 40 nations in six continents.
BAE Systems - $12.91bn
International defence, aerospace and security company BAE Systems, headquartered in London, reported sales of $12.91bn and net profit of $736m in the first half of 2014.
BAE delivers products and services in areas of defence, security, electronics and systems integration, cyber and intelligence, military, IT and information systems.
Some of the class leading defence product offerings from BAE include the BVS10 armoured vehicle, AMPV, M777 howitzer, Hawk jet trainer, Astute class submarine, Type 45 air defence destroyer and Queen Elizabeth class aircraft carrier.
Northrop Grumman - $11.88bn
Northrop Grumman's $11.88bn revenue in H1 2014 makes it the seventh biggest aerospace and defence contractor.
Northrop Grumman offers systems, products and services for defence and commercial customers in sectors such as unmanned systems, cyber security, C4ISR, and logistics. The company sells products and services to customers in 25 nations.
E-2D Advanced Hawkeye, Global Hawk, and MQ-8 Fire Scout are some of the manned and unmanned aircraft offered by Northrop Grumman. The company also delivers targeting, surveillance, and self-protection systems for military aircraft.
Raytheon Company - $11.2bn
Raytheon Company reported net sales of $11.2bn for the first half of 2014. Income attributable to the company for the same period was $1.14bn.
Raytheon is an international aerospace and defence company offering products for defence and commercial customers. Headquartered in Waltham, Massachusetts, it operates offices in 19 countries and sells products and services to customers in 80 countries.
The company's business segments are missile systems; space and airborne systems; integrated defence systems; and intelligence, information and services.
Safran Group - $9.65bn
Safran Group's revenues in the first half of 2014 accounted for $9.65bn, making it one of the world's top 10 aerospace and defence contractors.
Safran is a high-technology international group and a top class component provider to the aerospace, defence and security industries. The company employs 66,300 people.
Safran operates three major businesses including aerospace, defence and security. It develops, manufactures and sells engines and propulsion systems for civil and military aircraft/rotorcraft, ballistic missiles, launch vehicles and satellites. It also offers a range of components and systems for civil and military aircraft and helicopters.
With $9.15bn revenues in the first half of 2014, Rolls-Royce just makes it in to the top ten aerospace and defence companies. Its net profit for the same period amounted to $652m.
Rolls-Royce is the second biggest supplier of aero-engine products and services for defence sector. About 13,000 Rolls-Royce engines are operational across the world and are fitted aboard more than 30 types of commercial aircraft.
Rolls-Royce is the major supplier of engines for wide-body airliners and corporate jets markets. The company offers engines for transport aircraft, combat aircraft, patrol aircraft, trainers, helicopters and unmanned aerial vehicles. It also delivers engine and propulsion systems for merchant and naval surface vessels and submarines.