The EU Strategy for Sustainable and Circular Textiles outlines a comprehensive approach to promoting sustainability in the industry, including the use of recycled and renewable materials, circular business models, the uptake of sustainable innovations, and the reliability of sustainability knowledge. Literature suggests that promotion of sustainability knowledge spillover within the textile industry can have an impact on the overall textile business in terms of social, financial, and environmental sustainability and its overall competitive advantage. This paper aims to provide a comprehensive overview of the current research on sustainability knowledge spillover in the textile industry. The research method is a systematic literature review of articles published in the leading KM journals.