PurposeTo explore the relationship between sustainability and the complexity of the food supply chain (FSC) and to promote adopting a sustainable approach that balances financial growth, environmental preservation and social well-being.Design/methodology/approachAquantitative method approach was employed using a survey of 379 respondents. Principal component analysis (PCA) was employed to evaluate the factors contributing to sustainability and their impact on the complexity of the FSC.FindingsSustainability amplifies the complexity of the FSC. Several factors that influence the complexity attributes were identified, including clean technologies, stakeholder engagement and supply chain coordination.Research limitations/implicationsHighlights the importance of adopting a sustainable approach that balances financial growth, environmental preservation and social well-being in FSCs. It also suggests the need for further research to improve understanding of the factors influencing the complexity of the FSC.Practical implicationsCompanies operating in the FSC should invest in control measures, risk identification and prevention, employee training and awareness and policies and procedures for waste management and environmental sustainability.Social implicationsHighlights the importance of social responsibility in the FSC, including all stakeholders. It also emphasizes the need to minimize negative impacts on the environment and ensure the preservation of natural resources.Originality/valueProvides a comprehensive analysis of the complexity attributes of the FSC and their relationship with sustainability factors. It offers practical and theoretical insights for companies to sustainably manage the FSC.