This study aims to describe and characterize the state of understanding about RSBs, and to fill knowledge gaps about their role and potential impact. The article will explore the historic and possible future trajectories of the RSBs at the country- and global-levels, by responding to three closely-related research questions: 1. What are the governance structures of the roundtables for sustainable beef? 2. What actions have been taken by, or are planned or likely to be taken by, the roundtables for sustainable beef, that are intended to enhance the sustainability of beef supply chains? 3.