AbstractSupply chain performance (SCP) is the major factor that helps companies to increase its competitiveness. However, knowledge management (KM) has, in appearance, a direct impact on SCP, but its formalization remains always ambiguous. In fact, this paper aims to determine KM impact on SCP facets (SCPF) through highlighting the relation between KM elements (KME) and SCPF. Proposed approach consists, first, to design a conceptual model identifying the relationship between KME and SCPF. Thereafter, to implement this model, quality function deployment (QFD) house of quality (HOQ) was used. Through the interrelationship matrix, the impact of each KME on whole SCPF can be measured and evaluated, similarly, the impact of whole KME on each SCPF. Finally, based on interviews treated with the managers of SIDILEC international company, a case study was implemented. The results demonstrate that knowledge application, sharing, and capitalization are the most impacting KME on all SCPF. Furthermore, reliability and sustainability are the most impacted SCPF by all KME.