An estimated eight million tons of plastics end up in the ocean each year, negatively impacting the environment and society. However, the burden of these impacts are often disproportionately experienced by communities who are marginalized and most vulnerable to the impacts of plastic pollution. Moreover, policies and management actions intended to mitigate plastic pollution have in some cases exacerbated existing inequities, or even created new domains of hegemonic interest, such as the global plastic waste trade or the growing privatization of plastic waste governance. Despite increased acknowledgement that marine plastic pollution (MPP) is an equity issue, there is limited research on the topic. Through thematic research and case studies that explore diverse issues of MPP, this report contributes to understanding the ways in which inequitable plastic pollution burdens are embedded within every facet of plastics, from its creation to disposal across all corners of the world.