Abstract: Organisational complexity continues to hide the bordering processes that determine the boundaries of Martu people’s representation in Aboriginal affairs in the Western Desert of Australia. This paper describes participatory action research that sought to understand why Martu people are not represented in the institutions underpinning service provision. Key findings are that there is a complex inter-cultural space where mining companies and government create a multitude of Martu representative boundaries, most of which are not recognised by Martu people. A community-of-practice approach towards improved Martu representation is recommended, based on three principles: firstly, enabling Martu governance and representation; secondly, expanding dialogue and deliberation; and thirdly, recognising the role of boundary spanners. The paper outlines the relevance of these principles to the practical reality of enhancing representation of Martu people in service delivery.