<p>This study examines the relationship between green supply chain management practices and performance outcomes in Environmentally Friendly Accommodation Facilities in Türkiye, using stakeholder theory as a theoretical lens. The research addresses a significant gap in the literature by investigating these relationships in the service sector using formative measurement constructs. Data were collected from 300 certified environmentally friendly accommodation facilities during February–March 2021, and relationships were tested using partial least squares structural equation modeling. The findings reveal that Internal Environmental Management has the strongest positive impact on all performance dimensions, with standardized path coefficients ranging from 0.420 to 0.493. Ecodesign and investment recovery positively influence both environmental and operational performance, while ecodesign also enhances positive economic performance. Customer collaboration demonstrates significant effects on cost management but shows no relationship with environmental or operational outcomes. Green purchasing does not show significant relationships with any performance dimension. These results indicate that accommodation facilities can improve performance by strengthening management support for environmental initiatives, implementing comprehensive environmental programs, and focusing on reduce-reuse-recycle strategies. This study contributes to the literature by employing formative constructs to examine green supply chain management in the underresearched accommodation sector, treating economic performance as a multidimensional construct that encompasses both benefits and costs, and providing insights specific to emerging economy contexts. The findings offer practical guidance for hoteliers seeking to balance environmental sustainability with performance improvement.</p>