ESSE, UgwunwaHALISO, Yacob2024-05-072024-05-072024-011562-4730DOI 10.5195/biblios.2023.1102http://repository.elizadeuniversity.edu.ng/jspui/handle/20.500.12398/1446Staff PubsObjective. The study investigated the challenges of Institutional Repository Sustainability in public university libraries in Nigeria. Method. A questionnaire was administered to 230 librarians from public university libraries in Nigeria. The sample of repository institutional was purposive, all registered on Open-DOAR, whether functional or non-functional. Results. The main sustainability challenges with Nigerian institutional repository were: funding, content populating, poor synergy between IT and library staff as well as lack of qualified staff, lack of sustainable Internet connectivity, electricity supply, among others. Most librarians have a doctorate and little experience in Institutional Repository Sustainability. The study also proposed recommendations for IRs.Conclusions. There is a need for a paradigm shift in the process of managing the sustainability of institutional repositories. Libraries cannot be bystanders in the economy and production of knowledge.enLibrarians;Libraries;Nigeria;Institutional Repository Sustainability;Article