The Corrib gas project (Irish: Tionscanamh Ghás Aiceanta na Coiribe) is a developed natural gas deposit located in the Atlantic Ocean, approximately 83 kilometres (52 mi) off the northwest coast of County Mayo, Ireland.

The licence was issued under the licensing terms for offshore oil and gas exploration and development 1992.

[11] Royal Dutch Shell proposed to develop the Corrib field as a sub-sea production facility with onshore processing.

[6][12] The Corrib gas field is located about 83 kilometres (52 mi) off Erris Head in County Mayo, in an area known as the Slyne Trough in water depths of 355 metres (1,165 ft).

Flexible individual flowlines will run from each well to a production manifold which will feed the gas into the main pipeline.

[14] Work on the offshore section took place in summer 2009 and involved over 7,000 lengths of pipe being welded together on board the Solitaire pipelaying vessel.

The plant has a capacity of 10 million standard cubic metres of purified gas per day.

Some opponents of the scheme cited concerns about the health, safety and environmental impact of the onshore aspects of the project.

[20] The upstream high pressure gas pipeline connecting the wells to the inland processing site runs through the area of Rossport, close to local residences.

A report by Dr. Richard Kupriewicz concluded that "the terrain makes escape routes for the clustered population essentially impossible in the event of a [pipeline] rupture".

Senior planning inspector Kevin Moore's report stated in part: It is my submission that the proposed development of a large gas processing terminal at this rural, scenic, and unserviced area on a bogland hill some 8 kilometres inland from the Mayo coastland landfall location, with all its site development works difficulties, public safety concerns, adverse visual, ecological, and traffic impacts, and a range of other significant environmental impacts, defies any rational understanding of the term "sustainability".In November 2009, An Bord Pleanála ordered Shell to redesign the pipeline and move its route away from homes saying it posed an "unacceptable risk".

[24] Until 2007, the Irish Petroleum Licensing Terms imposed a flat 25% income tax on gas production revenues.