This article responds to recent calls to “provincialize” (Hawthorne 2019) and “pluralize” (Bledsoe and Wright 2019a) Black geographies. We do so by adopting a relational, transnational, and multiscalar approach. Drawing on ethnography with Black Lives Matter activists in Sydney, Australia, we adopt a decolonizing framework to argue that Indigenous knowledges, experiences, and actions can extend the epistemologies and cartographies of Black geographies. The mapping of Black geographies in Sydney reveals three multilayered and intersecting ways through which Black agency, place-making, and resistance are made manifest in transnational Black Lives Matter protests: (1) through invoking “stretched out” geographies, forging shared solidarities between African American high-profile cases of policing injustice and Aboriginal deaths in custody; (2) through counterhegemonic attempts to reconfigure Australia Day as Invasion Day, reclaiming colonized histories that subvert the premise of Australia as a “White nation”; and (3) through conjoining transrural cases of violence toward Aboriginal communities living in peripheral places and then strategically amplifying their concerns through place-based activisms in the global city. Finally, we conclude by arguing that further international accounts are crucial to this emerging field.