Drawing on the work of Matike Mai Aotearoa: The Independent Iwi Working Group on Constitutional Transformation (the Working Group), this article argues that there is an evolving New Zealand constitutionalism, one that offers a constitutional understanding grounded in the Māori constitutional system. The article opens with a descriptive analysis of the Māori constitutional system, explains the key features of New Zealand’s existing constitution and concludes with an argument that the existing constitution can evolve – and, through the political process, ought to evolve – according to the constitutional models that the Working Group recommends. This article deploys legal research methods, primarily doctrinal research and applied doctrinal research.¹