This thesis explores the multifaceted role of dialogue in the context of social licence to operate (SLO) in the extractives sector (including mining and gas extraction). SLO is a concept that describes the ongoing and dynamic social acceptance of a resource development by local communities and other stakeholders who have the power to influence company operations. There has been discourse by extractives companies and in academia about the importance of 'meaningful dialogue' as one form of engagement that contributes to developing and maintaining a social licence. The relationship between dialogue and SLO, however, has undergone relatively little explicit, in-depth examination. I use a mixed methods approach to address this gap by exploring the role of dialogue in social licence from three standpoints: (a) a theoretical perspective, drawing on literature from multiple disciplines; (b) stakeholder engagement practitioner perspectives using qualitative, semi-structured interviews; and (c) perceptions of residents in Australian mining communities through a quantitative, social psychological survey.Through this body of work, I make five contributions to the SLO field of knowledge. The first is an interdisciplinary conceptual framework considering the role of dialogue in SLO. The second is a coherent understanding of dialogue and potential outcomes from dialogue specific to SLO. The third is a reconceptualisation of two core factors that have previously been established as central to SLO: trust and procedural fairness, bringing conceptual depth to an under-theorised field.The fourth is an analysis of how dialogue can potentially reinforce the illegitimate power asymmetries it may seek to redress with implications for stakeholder identification and engagement processes. The fifth is a model establishing empirical relationships between community members' experiences of dialogue and other factors central to SLO including company-community relationship, perceptions of procedural fairness, company-community trust, and social acceptance.I argue, based on these theoretical and empirical findings, that dialogue has a critical but complex role to play in the processes of social licence engagement. I discuss each set of results in relation to the SLO literature. Implications for theory are highlighted, pointing to areas of future research that might usefully build on current findings. Implications for industry also are drawn to propose evidence-based considerations for the design, implementation, and evaluation of current and future engagement strategies used by companies to engage stakeholders in meaningful dialogue in attempts to establish and maintain a social licence.3