In this chapter, we consider the geopolitics of sustainability in Greenland. Our discussion is premised on the argument that space is not simply a stage on which practices of sustainability are enacted. Materiality, objects, and networks of knowledge create multiple contexts for ideas about sustainability to emerge, circulate, play out and make themselves felt in particular places and in and between particular kinds of geo-assemblages. We use the shipping container, flight networks and critical infrastructure as our examples. By way of conclusion, geo-assemblage as concept highlights how sustainability stretches Greenland geo-physically but also geo-politically, as land, sea, air, and minerals become complicit in multi-scalar and multi-object sustainability projects.