The special issue, ‘Revisiting the Slow Food Movement: Three Cases of Heritage Innovation and Sustainability in Alternative Food Networks’, explores the integration of Slow Food principles within Alternative Food Networks (AFNs) to enhance sustainability and cultural heritage preservation. By analysing case studies from Afghanistan, Ireland, and Switzerland, the editorial illustrates how AFNs can address food security, local communities’ social adherence, economic viability, and environmental sustainability. The Afghan case emphasises collaborative agribusiness for resilience and market access, the Irish study focuses on sustainable lobster fishing practices, and the Swiss example highlights the revival of traditional red berry cultivation. Utilising the Triple Bottom Line framework, this editorial explores the multifaceted benefits of AFNs in fostering sustainable food systems that align with local cultural practices and innovative agricultural techniques. This special issue provides valuable insights for policymakers, practitioners, and scholars aiming to develop more resilient and equitable food systems globally.