This paper offers a critical reflection on the potential of solidarity-based and collective South-South cooperation to serve as an alternative paradigm for “building back better” in the aftermath of cascading global crises. Departing from dominant recovery frameworks that privilege market-led solutions and external financing, the study foregrounds long-standing regional practices of mutual aid, technology sharing, and pooled procurement that have historically animated South-South relations.

Drawing on archival analysis, key-informant interviews, and comparative case studies from the Caribbean Community (CARICOM), the South Asian Association for Regional Cooperation (SAARC), and the Southern African Development Community (SADC), we trace how principles of solidarity, non-reciprocity, and collective self-reliance have been operationalised during pandemics, debt distress, and climate disasters.

The findings reveal four recurrent mechanisms diagnostic solidarity (joint epidemiological and risk mapping), fiscal solidarity (liquidity and debt-service pooling), productive solidarity (distributed manufacturing and technology transfer), and ecological solidarity (shared adaptation infrastructures)—that enabled faster, more equitable recovery trajectories than those observed under orthodox conditional lending.

Yet the research also uncovers structural limits: asymmetric power relations among states, donor co-optation of solidarity language, and the erosion of regional policy space through extra-regional trade agreements. The paper concludes by proposing a praxis-oriented framework that recenters collective regional sovereignty, safeguards solidarity mechanisms from market capture, and embeds redistributive justice as a non-negotiable pillar of any “better” post-crisis future.