The escalating threat of plastic pollution and marine litter has underscored the critical role of international environmental law in safeguarding marine ecosystems. This project seeks to provide a comprehensive analysis of the regulatory landscape governing plastic pollution and marine litter, aiming to foster a deeper understanding of the legal frameworks, international agreements, and regulatory mechanisms aimed at mitigating these environmental challenges. The introduction will outline the objectives, scope, and methodology employed in the research, emphasizing the need to understand the complexities of international environmental law in regulating plastic pollution and marine litter, the legal frameworks in place to address these issues, and the potential for enhancing regulatory measures to protect marine ecosystems.