Reducing Scope 3 greenhouse gas (GHG) emissions is a significant sustainability challenge for companies, as they usually represent the largest share of the total corporate emissions. This thesis examines the case of Industria Grafica Eurostampa S.p.A. (referred in this thesis to simply as Eurostampa) a global printing company that produces high-quality labels. The research explores how Eurostampa can measure and cut its Scope 3 emissions, combining data analysis with practical strategies. Previous analyses on Scope 1 and Scope 2 emissions have already been completed, providing a solid foundation for this study. The research methodology follows the steps below: review and integration of existing studies, validation of the Scope 3 assessment, identification of hotspots and definition of a reliable baseline 2023 of scope 3 and reduction strategies (for internal use).