Abstract
The study examined the impact of supplier evaluation, selection, development, and segmentation on supply chain performance in pharmaceutical organisations. It also determined the moderating influence of top management support on the link between supply chain performance and organisational performance. The research philosophy underlying this study was positivism, which led to the adoption of a quantitative research method. Empirical data were gathered from a significant sample of supply chain experts at leading Pharmaceutical Companies in South Africa. Data collection scales were derived from existing studies. The collected data were analysed using structural equation modelling. The results confirmed the validity of the proposed model, which is based on selected criteria (latent variables). This study highlights the significant impact of supplier evaluation, selection, development, and segmentation on supply chain performance in pharmaceutical organisations. The research shows a positive correlation between supply chain performance and organisational performance, with top management support playing a moderating role. The study's originality and value stem from its thorough examination of how supplier relationship management practices affect supply chain performance and organisational performance in the South African pharmaceutical industry. Furthermore, the research contributes to the existing body of knowledge by examining the moderating effect of top management support on the relationship between supply chain performance and organisational performance. These findings offer valuable insights for academics and industry professionals in the realm of supply chain management.