By 2050, estimates indicate that there could be respectively 216 million internal and 200 million international climate migrants, especially impacting the Global South, notably Africa and Southeast Asia, where family farming dominates. Climate change affects land quality and tenure, influencing farmers' vulnerability and mobility. Mitigation and adaptation policies, such as fighting deforestation and recognizing climate migration, are crucial but face challenges in effectiveness and social impact. The chapter explores how climate change and climate policies affect land tenure and migration dynamics in rural areas, and their implications for family farming. It highlights land as a social relation and mobility as a complex coping strategy for family farmers under climate risks.