<p>Although sustainability education has become a global priority, significant disparities remain between developed and developing nations in advancing the Sustainable Development Goals. Research on sustainability education in the Global South continues to be fragmented and underrepresented, limiting a comprehensive understanding of its intellectual development and impact. This study aims to systematically map global research trends, influential contributors, and thematic orientations in sustainability education across the Global South. A bibliometric analysis approach was employed, using data retrieved from the Scopus database on September 29, 2025, and analyzed through R, RStudio, Vos Viewer and Microsoft Excel. The analysis followed a three-stage process involving conceptual alignment, data extraction, and bibliometric mapping. The findings reveal a substantial increase in publications over the past decade, though authorship and institutional contributions remain concentrated in a few countries. Collaborative networks between the Global North and South are emerging yet remain limited in scope and influence. The most prominent research themes include curriculum reform, environmental literacy, and educational equity, while recent hotspots highlight decolonial and context-specific pedagogical approaches. These results emphasize the need for more inclusive academic collaboration and equitable knowledge production to strengthen sustainability education frameworks in developing contexts. The study contributes to advancing global educational equity and offers strategic insights for policymakers, educators, and researchers working to enhance sustainability learning systems across diverse socio-economic environments.</p>