1 The New Zealand Legal Systems: Tikanga Māori and State Law
Kate Thompson
Aotearoa New Zealand has two legal systems: tikanga Māori and state law.
In 2023, Te Aka Matua o te Ture | New Zealand Law Commission produced an extensive study paper He Poutama[1] in which it addresses the interaction between tikanga Māori and state law.
Tikanga Māori
Tikanga Māori, also known as Māori customary law, is a “structured framework, comprising tikanga concepts (principles, values and norms) and the processes and procedures (sometimes called kawa) for enforcing those concepts”.[2]
Te Kāhui Ture o Aotearoa | New Zealand Law Society has produced a Practise Briefing to provide guidance to lawyers on the relevance of tikanga Māori, which states:[3]
In 2022, the Supreme Court in Ellis v R confirmed that tikanga has and will continue to influence the common law in Aotearoa New Zealand in cases where it is relevant. The Court observed that tikanga forms part of the law through incorporation in statutes and regulations, is a relevant consideration in the exercise of discretions, and is incorporated in the policies and processes of public bodies. The majority in Ellis also recognised that tikanga is the first law of Aotearoa New Zealand and that care is required not to impair the operation of tikanga as a system of law and custom in its own right. There are also several other cases that have confirmed tikanga is part of New Zealand law.
State Law
State law is a common law system consisting of statute law enacted by Acts of Parliament and case law, in which the judiciary may apply and interpret the statutes or make decisions of law where no statute exists. This is also called judge-made law.
Throughout this book the main focus will be on state law. For further information about tikanga Māori, these are some of the leading sources:
Jayden Houghton Tikanga Māori and State Law (Thomson Reuters, Wellington, 2025).
New Zealand Law Commission He Poutama (NZLC SP24, 2023).
New Zealand Law Society “Tikanga Māori” (28 July 2025) Practice Briefings <www.lawsociety.org.nz>.
Stephen Penk, Mary-Rose Russell and Jayden Houghton Aotearoa New Zealand Law: Foundations and Method (3rd ed, Thomson Reuters, Wellington 2025).
Jacinta Ruru “First Laws: Tikanga Māori in / and law” (2018) 49 VUWLR 211.
Joseph Williams “Lex Aotearoa: An Heroic Attempt to Map the Māori Dimension in Modern New Zealand Law” (2013) 21 Waikato Law Review 1.
- Te Aka Matua o te Ture | New Zealand Law Commission He Poutama (NZLC SP24, 2023). ↵
- Stephen Penk, Mary-Rose Russell and Jayden Houghton Aotearoa New Zealand Law: Foundations and Method (3rd ed, Thomson Reuters, Wellington 2025) at 19. ↵
- New Zealand Law Society "Tikanga Māori" (28 July 2025) Practice Briefings <www.lawsociety.org.nz>. ↵