This document provides guidance on integrating local stakeholder participation and social data into collaborative landscape conservation (CLC) planning. This Guide draws on empirical analysis of current collaborative landscape conservation initiatives to highlight how local stakeholders and social data have been used in a range of landscape conservation planning efforts. We share insights regarding local stakeholders’ preferences for participation in collaborative landscape conservation planning and some of the undesirable impacts resulting from not considering social data or local stakeholders’ input during these planning efforts. We offer a process model indicating when and how local stakeholder participation and social data might be usefully integrated during collaborative landscape conservation planning. We close the Guide by examining resources that those responsible for developing collaborative landscape conservation planning products might draw on to find existing social data and how they might collect new data from local stakeholders. We believe guidance provided in this document can help foster effective landscape conservation planning by increasing local stakeholders’ investment in collaborative landscape conservation planning processes and products and their sense of ownership over conservation decisions and outcomes.