This study examines features of regional clusters and environmental sustainability among member firms. By studying a sample of 646 firms across four regional wine clusters in Australia, the evidence suggests regiona l export intens it y is positive ly associat ed wit h implementation rates of environmentally sustainable practices. Further, as women in leadership roles (as a proxy for social proximity) grow within regional clusters, this strengthens the relationship between export intensity and environmental sustainability. The results advance research on the features of regional clusters that are expected to influence the adoption of organiza tio na l practices among member firms. Conclusio ns are presented along with limitations and future research opportunities.