This article draws on directed ethnographic research and a review of literature to explore how the commodification of fishing rights discursively and materially remakes human-marine relationships across diverse regions. It traces the history of dominant economic theories that promote the privatization of fishing access for maximizing potential pro ts. It describes more recent discursive trends that link the ecological health of the world's oceans and their fisheries to widespread privatization. Together, these economic and environmental discourses have enrolled a broad set of increasingly vocal and powerful privatization proponents. The article provides specific examples of how nature-society relationships among people, oceans, and sh are remade as privatization policies take root in fishery systems. We conclude with an overview of several strategies of resistance. Across the world there is evidence of alternative discourses, economic logics, and cultures of fishing resistant to privatization processes, the assumptions that underlie them, and the social transitions they often generate.