Top 10 Defence Companies in india 

1.BAE System India 

Innovative security technologies from BAE Systems guards individuals, national security, plus essential data and infrastructure. The company is looking for novel techniques to give its consumers a strategic advantage in the air, sea, land, and cyber sectors. It comprises 89,600 skilled workers in over 40 countries and collaborates extensively with indigenous partners to promote economic growth by sharing expertise, abilities, and technologies

2. Boeing India

Established in 2003, Boeing India has its headquarters in New Delhi. Field service facilities in Mumbai, Hindan, Rajali, and New Delhi, as well as a burgeoning Boeing India Engineering & Technology Center (BIETC) in Bengaluru and Chennai, make up Boeing's India activities. Boeing is devoted to raising the standard of livelihood in the regions where it serves as a globally conscious corporate champion. 

3. BrahMos Aerospace

BrahMos Aerospace is a joint venture between the Indian Defence Research and Development Organization (DRDO) and the Russian NPO Mashinostroyenia. The company was established in 1998 and has its headquarters in New Delhi.

4.Bharat Dynamics Ltd

Established in 1970, Bharat Dynamics headquarters in Hyderabad is a public sector operating under the Ministry of Defence, Government of India. It has a production facility for guided missile systems and supporting equipment for the Indian Armed Forces. It has evolved from a missile producer to a Weapon System Integrator, offering the Indian Armed Forces as a complete solution supplier.

5. Bharat Electronics 

Based in Bengaluru, Bharat Electronics was incorporated in 1954. The company is operated by the Indian Government and primarily produces aerospace and defence technology. It works for both the defence and non-defence sectors. For both the sectors, it has a wide range of products to offer, such as Naval System, Avionics, Electro-Optics, Land-based radars, etc. for the defence system. The non-defence sector has services like Cyber Security, Homeland Security, etc.

6. Electronics Corporation of India 

Incorporated in 1967, Electronics Corporation of India is a firm under the Department of Atomic Energy, operated by the Government of India. The company has its headquarters in Hyderabad. It focuses to create a sturdy native manufacturing unit of nuclear energy, space, and defence for the country. Now the advanced company produces even more products in the sector of security, IT and e-Governance.

7. Defence Research & Development Organization 

8. Lockheed Martin India Pvt Ltd 

Established in 2007, Lockheed Martin is a subsidiary of Lockheed Martin Corporation. It has its headquarters in New Delhi. The company is ranked among one of the best defence companies in India that deploy an advanced research team along with designing and manufacturing defence technologies. Aeronautics, Missiles and Fire Control, Rotary & Mission Systems, and Space Systems are the company's 4 primary elements.

9. Hindustan Aeronautics Limited 

Based in Bengaluru, Hindustan Aeronautic Limited was established in 1940 as Hindustan Aircraft; later in 1964, it was renamed to its existing name. HAL is a public sector undertaking company, specializing in aerospace and defence technology. HAL now has 11 discrete research and development (R&D) as well as 21 manufacturing departments dispersed over India's four industrial facilities. 

10. Mahindra defence 

Mahindra Defence Systems is a renowned manufacturer of armoured vehicles for military and paramilitary agencies. Having over seven decades of expertise in combined project and operations management, the firm is one of the reliable defence companies in the country. It offers several services including aircraft mobile surveillance, advanced and powerful defence equipment to the Army, Navy, and Air Force.