ESG is emerging as a key strategy for sustainable management of companies, governments, and public institutions. In 2021, the government announced policies to lead ESG management and revitalize ESG investment in the public sector to strengthen ESG management of public institutions. Although various studies related to ESG management in public institutions have been conducted, research on port public enterprises, which include four institutional types as public enterprises, is insufficient. Therefore, this study attempted to present ESG management strategies that can be developed in the future by analyzing the ESG management innovation strategy system, vision, and differences of the CEO of a port Authority and comparing and analyzing ESG management strategies with other institutions. As a result of the study, the ESG management strategies of the four port public corporations were important in terms of safety, environment, transparent management, and shared growth. In the future, port public corporations will need to demonstrate their CEO's ESG follower leadership to establish a cooperative system with local communities to secure ESG management connectivity, and lead local ESG governance through the formation of a regional collaboration committee.