The Greek Revolution of 1821 was not merely a national uprising—it was a transnational event that reshaped the Eastern Mediterranean and reverberated across the globe. Moving beyond traditional nationalist historiography, this study draws on recent transnational and Ottoman-centered scholarship to examine how diaspora networks, European Philhellenes, and great power rivalries transformed a regional revolt into an international cause. The Ottoman context is treated not as a passive or declining backdrop, but as a dynamic, multiethnic polity grappling with reform, resistance, and the challenges of maintaining imperial cohesion. Drawing on multilingual and cross-regional sources, the Contributors explore how the Revolution was perceived, contested, and reshaped across diverse cultural and political spaces, embedding 1821 within the broader currents of nineteenth-century revolution, diplomacy, and state formation.