Effective waste management remains a critical challenge in Nigeria, where rapid urbanization and population growth have outpaced existing waste disposal and recycling systems. Public-private collaborations (PPCs) have emerged as a viable governance model to address these inefficiencies by leveraging government policies and private sector innovations to enhance waste collection, recycling, and sustainable waste disposal. This study evaluates the effectiveness of policy frameworks and governance models guiding public-private partnerships in Nigeria’s waste management sector, examining their impact on efficiency, sustainability, and environmental protection.