The Environmental, Social, and Governance (ESG) model is implemented to promote the private sector participation in ecologically friendly, socially inclusive, and good governance businesses, with support from financial institutions to adopt sustainable finance. Cambodia has been putting substantial efforts into implementing sustainable finance principles and guidelines, but challenges remain. Therefore, this article examines Cambodia’s efforts and policies related to sustainable finance. It also discusses challenges and provides key recommendations to accelerate the implementation of sustainable finance in the country.