This document summarizes how the Caribbean Large Marine Ecosystem Project (CLME Project) facilitated regional governance arrangements in the Wider Caribbean Region. It discusses how the project (1) evaluated existing regional cooperation arrangements in its Transboundary Diagnostic Analysis; (2) took these arrangements into account in its design; and (3) engaged with the over 25 relevant regional organizations. The project used Ostrom's Institutional Analysis Framework and developed a multi-level regional governance framework to explore the roles and relationships between organizations. Ultimately, the project's Strategic Action Program was designed around strengthening regional governance without taking on a governance role itself.