Abstract: | This article explores the nature of indigenous ethnicity in Borneo and its historical transformation. The principal focus is on Dayak ethnicity beneath the level of generic Dayak identity. Through examples from interior southeast Borneo, I describe a historically dominant pattern of identification with small and localised groups and the emergence of larger ethnic categories. Like elsewhere in Borneo, a condition of pervasive micro-ethnic differentiation was endemic, while larger categories were generally unimportant and mostly evolved only recently. I assess the importance of different underlying principles of collective identification for this pattern—culture, descent, kinship, locality and politics—and examine the importance of state influence for the subsequent development of larger categories. I propose that ethnicity in Borneo, as in most places, is fundamentally political. I discuss how this applies to both past and present forms, and relates to a distinctive significance of locality for collective identification. |