Established narratives interpret the drive for Indigenous unity solely as a phenomenon that emerged in response to the political agenda of the settler state. But the evolving and multifaceted concept of unity has long shaped the modern Indigenous political movement. Through a detailed history of the Union of BC Indian Chiefs (UBCIC), one of Canada’s leading Indigenous political organizations, Assembling Unity explores the relationship between pan-Indigenous politics in British Columbia and global political ideologies. Situating Indigenous perspectives on governance firmly in the foreground of her study, Sarah Nickel demonstrates that while unity has been an enduring goal for BC Indigenous peoples, its articulation was heavily negotiated between UBCIC members, grassroots constituents, and Indigenous women’s organizations. She draws on oral interviews, newspaper articles, government documents, and UBCIC records to expose the uniquely gendered nature of political work, as well as the economic and emotional sacrifices that activists make. Assembling Unity offers new insights into the evolution of political movements, the concept of unity in politics, and gendered political expressions. In the process, this incisive work unsettles dominant Western and patriarchal political ideals that cast Indigenous men as reactive and Indigenous women as invisible and apolitical.