Digital transformation, through innovation in information and communication technologies (ICTs), impacts higher education (HE) and fosters knowledge sharing (KS). While research explores the implications of digital transformation in HE, its specific influence on KS remains understudied. This systematic literature review investigates the nexus between ICTs and KS in HE by examining peer-reviewed literature prior to the AI boom. Three databases were searched, yielding 473 journal articles, which were screened, eligibility checked and assessed for quality and relevance to predetermined research questions. Eighteen eligible empirical studies were analysed, revealing ICTs influence on KS across university functions: teaching-learning, governance/operations and research. Retrospectively, this study also demonstrates that the rapid pivot to fully online functions during the pandemic was possible because of prior ICT advancements despite known barriers (e.g., digital literacy, Internet connectivity). Essentially, ICTs enable vital KS for universities to ensure they remain resilient and sustainable now and into the future.