Higher Education Institutions (HEIs) greatly relies on tacit knowledge sharing. Hence, it is important to investigate the means of promoting knowledge retention. The growth of technology in knowledge management system triggers the transformation of knowledge quality to leverage institutional knowledge. HEIs as knowledge provider needs a knowledge sharing network which can meet the demands of changing knowledge. This paper aims to study the mediating role of knowledge management (KM) system quality between organizational factors and tacit knowledge sharing among academics of HEIs. Barron and Kenny method was used to measure the direct and indirect influence of KM system quality between organisational factors and tacit knowledge sharing. The prelude findings reveal that knowledge management system was effective through organisational factors which promote tacit knowledge sharing among academics of HEIs.