GAIL (India) Limited is the largest state-owned natural gas processing and distribution company in India, It is headquartered in New Delh

As you are asking for its noida office address , so I am providing same for you:

Petrochemical Marketing Group
GAIL (India) Ltd
10th Floor, Jubilee Tower
B-35 & 36, Sector – 1
Noida (U.P.) – 201301
Ph.: 0120-2446400, 4862400
E-mail : gailpmg@gail.co.in

GAIL Polymer Technology Center
GAIL (India) Ltd., Infohub Building
B35 & 36, Sector -1
Noida (U.P.) - 201301
Ph. : 0120-2549210, 2549155
E-mail : shivaji.basu@gail.co.in

GAIL (India) Limited company profile:

Type State-owned enterprise

Public company

Traded as BSE: 532155, NSE: GAIL, LSE: GAID

BSE SENSEX Constituent

Industry Energy, Petrochemicals

Founded 1984

Headquarters New Delhi India

Key people Shri B. C. Tripathi (Chairman & MD)

Products Natural Gas, Petrochemical, Liquid Hydrocarbons, Liquefied
Petroleum Gas Transmission, City Gas Distribution, E&P, Telecommunication,
Electricity Generation.

Revenue 619 billion (US$9.2 billion) (FY2013–14)

Net income 47 billion (US$700 million) (FY2013–14)

Number of employees 3,994 (2013)