World Ranking : 155
Oil and Natural Gas Corporation Limited is an Indian state-owned oil and gas company headquartered at Dehradun, India. It is a Fortune Global 500 company ranked 413, and contributes 77% of India's crude oil production and 81% of India's natural gas production. It is the highest profit m...

World Ranking : 741

Tata Consultancy Services Limited (TCS) is an Indian IT services, business solutions and outsourcing company headquartered in Mumbai, India. It is the largest provider of information technology in Asia and second largest provider of business process outsourcing services in India. TCS has ...

World Ranking : 126
Reliance Industries Limited is the largest private sector conglomerate company headquartered at Mumbai, India. The company is largest by annual turnover of US$58.5 billion and market capitalization of US$78.2 billion for the fiscal year ending in March 2011 making it one of the largest India...

NTPC Limited is the largest state-owned power generating company in India. Forbes Global 2000 for 2010 ranked it 341th in the world. It is an Indian public sector company listed on the Bombay Stock Exchange although at present the Government of India holds 84.5% of its equity. With a current generating capacity of 3489...

World Ranking : 313
Indian Oil Corporation Limited, or IndianOil, is an Indian state-owned oil and gas company headquartered at Mumbai, India. It is India’s largest commercial enterprise, ranking 98th on the Fortune Global 500 list in 2011. IndianOil and its subsidiaries account for a 47% share in the petroleum...

World Ranking : 471
Bharti Airtel Limited, commonly known as Airtel, is an Indian telecommunications company that operates in 19 countries across South Asia, Africa and the Channel Islands. It operates a GSM network in all countries, providing 2G or 3G services depending upon the country of operation. Airtel is t...

World Ranking : 502
Steel Authority of India Limited (SAIL) is one of the largest state-owned steel makers in India. With a turnover of 48,681 crore (US$10.86 billion), the company is among the top five highest profit earning corporates of the country. It is a public sector undertaking which trades publicly in the...

Larsen & Toubro Limited (L&T) is an Indian multinational conglomerate company headquartered in Mumbai, India. The company has four main business sectors: technology, engineering, construction and manufacturing. L&T has an international presence, with a global spread of offices and factories, further supplemented by a c...

World Ranking : 699

Bharat Heavy Electricals Limited is one of the oldest and largest state-owned engineering and manufacturing enterprise in India in the energy-related and infrastructure sector which includes Power, Railways, Transmission and Distribution, Oil and Gas sectors and many more. It is the 12th ...

World Ranking : 742
Reliance Communications Limited is a major Indian telecommunication company headquartered in Navi Mumbai, India. It is the 16th largest operator in the world with more than 128 million subscribers. RCOM, founded by Dhirubhai H Ambani (1932–2002), is the flagship company of the Reliance Anil D...