This chapter explores public participation in the governance of marine areas beyond national jurisdiction, also known as ocean global commons or ocean commons. In particular, the role of the Sustainable Development Goals (SDGs) is examined in enhancing public access to information and participation in institutions managing these resources: regional fisheries management organizations (RFMOs) and the International Seabed Authority (ISA). The argument is that the SDGs contribute to developing a new conception of ocean commons governance by emphasizing civil society participation in achieving sustainable development. This argument is based on two reasons. First, the SDGs encourage institutions at all levels to strengthen public access to information and participation in decision making in order to increase transparency, accountability and effectiveness of their administration. Second, the study of public participation in RFMOs and the ISA shows that the existing conception of ocean commons governance primarily involves states and industry organizations and restricts access to civil society. The chapter concludes that the SDGs promote a new understanding of ocean commons governance in which public participation is integral to the governing process and necessary to ensure institutional transparency, accountability and effectiveness for sustainable development.