Agroecological transitions aim to redesign the structure of contemporary global food systems to improve food security, ecosystem health, community development, worker livelihoods, and social and ecological justice. A fundamental principle of agroecology is the responsible governance of land. Yet land—as a concept, resource, and territory—is heavily contested through processes of colonization, enclosure, commodification, and financialization. The governance of land and natural resources is also intimately tied to questions of power and privilege—Who governs land? Who benefits, and who is excluded? These questions presuppose an ontological understanding of land that can also be contested: What is land, what purpose(s) does it serve, and for whom? In this article, we review key concepts at the intersection of land governance and agroecology. We take a case study approach to highlight how tensions around ontologies of land mediate agroecological futures in 2 settler-colonial contexts: Brazil and Canada. We then explore how land governance for agroecology might be experienced and understood across different land governance institutions—including relational and community commons, private property regimes, and new forms of hybrid land relations that challenge land privatization. We discuss how these land regimes influence people, landscapes, and agroecological outcomes and conclude with a consideration of the access, equity, and justice implications of different land governance approaches for sustainable food systems.