Around 80% of Latin America and the Caribbean (LAC) lives in cities—a share expected to reach 89% by 2050—driving rising solid waste while only 55% of urban waste reaches landfills, and waste streams grow more complex, from single-use plastics to organics and construction debris. Municipalities are uniquely positioned to lead the transition toward more circular, inclusive, and efficient waste systems. This chapter offers a practical overview of scalable recycling and waste-management technologies and proven models—with case studies and policy recommendations—adaptable to diverse municipal contexts.