Greymouth Petroleum is an energy company in New Zealand, established in 2002. It owns gas and oil fields, principally in onshore Taranaki, including Kowhai and Turangi in the north of the basin, and smaller fields such as Ngatoro and Kaimiro to the south, mainly delivering gas into industrial customers served by the Maui pipeline as well as Methanex locally. In 2002 it acquired the Kaimiro and Ngatoro fields from Shell Energy. In 2008 it acquired the New Zealand assets of Swift Energy. In 2018, it lodged a court challenge to the New Zealand government's ban on issuing new offshore oil and gas exploration permits.
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- "NZ oil co takes govt to court over exploration ban". Newsroom. 27 September 2018. Retrieved 4 December 2020.
- Mike Watson (5 June 2019). "Large gas producer to give up part of Taranaki mining permit". Stuff. Retrieved 4 December 2020.
- Tara Shaskey (19 July 2015). "One of the world's oldest oil fields continues to pump in New Plymouth". Stuff. Retrieved 4 December 2020.