Despite the growing research on the influence of stakeholder integration on organizational outcomes, our understanding of the specific firm-level conditions that may mediate the relationship between stakeholder integration and financial performance is lacking. Using primary data gathered from 233 small and medium-sized enterprises in Ghana, we found empirical support for our contention that the link between stakeholder integration and financial performance is mediated by a firm’s environmental sustainability orientation. In addition, our study demonstrated that competitive intensity moderates the indirect relationship between stakeholder integration and financial performance in such a way that the indirect effect through environmental sustainability orientation is stronger for higher levels of industry competition. We discuss theoretical and managerial implications of these findings.