GAIL
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| Formerly | Gas Authority of India Limited (1984–2002) |
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| Type | Public |
| BSE: 532155 NSE: GAIL LSE: GAID | |
| ISIN | INE129A01019 |
| Industry | Oil and Gas |
| Founded | 1984 |
| Headquarters | GAIL Bhawan 16, Bhikaji Cama Place, R.K. Puram, New Delhi, Delhi, India |
| Key people | Shri Deepak Gupta (chairman & MD) |
| Products | Natural gas Petrochemical liquid hydrocarbons Liquefied petroleum gas transmission Renewable Energy city gas distribution E&P Electricity generation |
| Revenue |  ₹141,903.35 crore (US$15 billion) (2025) |
 ₹12,595.01 crore (US$1.3 billion) (2024) | |
| ₹9,902.81 crore (US$1.0 billion) (2024) | |
| Total assets | ₹124,717.23 crore (US$13 billion) (2024) |
| Total equity | ₹77,195.98 crore (US$8.0 billion) (2024) |
| Owner | Ministry of Petroleum and Natural Gas, Government of India (51.8%) |
Number of employees | 5,038 (excluding 13,000+ contractual workers)(as on 31 March 2024) |
| Subsidiaries | |
| Website | gailonline |
GAIL (India) Limited (formerly known as Gas Authority of India Ltd.) is an Indian state-owned energy corporation with primary interests in the trade, transmission production and distribution of natural gas. GAIL also has interests in the exploration and production of solar and wind power, telecom and telemetry services (GAILTEL) and electricity generation. GAIL was founded as the Gas Authority of India Ltd. in August 1984 under the Ministry of Petroleum and Natural Gas to build, operate and maintain the HVJ Gas Pipeline. On 1 February 2013, the Indian government conferred GAIL with Maharatna status along with 14 other Public Sector Undertakings (PSUs).
GAIL owns and operates a network of around 13,722 km (8,526 mi) of natural gas pipelines and is building around 6,000 km (3,728 mi) of pipelines of its own and about 2,000 km (1,243 mi) through two joint ventures, as part of the National Gas Grid. The Petroleum and Natural Gas Regulatory Board has authorised GAIL to build the 1,755 km (1,091 mi) long Mumbai-Nagpur-Jharsuguda gas pipeline. In 2023, GAIL completed the world's first ship-to-ship LNG transfer.