Lack of attention to definitions of indigeneity is a problem in both political theory and practice. Defining indigeneity has at least two important consequences: it affects who has access to resources or rights reserved for Indigenous peoples; and it shapes the kinds of privileges and resources available to Indigenous peoples. In this article, I draw on Theodor Adorno’s concept of ‘nonidentity’ as a resource for exploring the power and limits of conceptions of indigeneity. I argue that recognizing the non-identical aspects (...) of indigeneity enables critical engagement with constellations of concepts that attend to the distinctive aspects of indigeneity in particular moments and locations. To illustrate my argument, I draw on one conception of indigeneity that could be characterized as non-identity thinking – a research approach called Kaupapa Māori. I suggest that non-identity is a promising resource for conceptualizing indigeneity as it has potential to respond to some of the key problems with current responses to indigeneity; notably, that universal definitions may not best represent what it means to be Indigenous, and that unreflective acceptance of current definitions fails to produce just outcomes. (shrink)