Folashade Precious OJO2025-09-302025-09-302024-12Kate TurabiaM.Schttps://repository.lcu.edu.ng/handle/123456789/1137Librarians in institution libraries are expected to display a level of high quality services to their users, hence, this study examines the influence of big data and collection management practices on quality service delivery among librarians in higher institution libraries in Ekiti State. The study adopted a descriptive survey research design. The study population consists of 84 librarians in institution libraries in Ekiti State. Cronbach's alpha reliability test was performed on the data to confirm the items' internal consistency, and the result was 0.75. The data collected in this study was analysed using descriptive statistics such as simple percentages, mean, and standard deviations to analyse the research questions and demographic data. In addition, the study hypotheses was tested at a 0.05 level of significance using inferential statistics. The result of the study revealed that the level of quality of library service delivery in higher institutions in Ekiti State was high. The finding of this study also revealed that volume was the most the prevalent big data practices in libraries in higher institutions in Ekiti State; followed by velocity, while varieties was the least. The finding further revealed that acquisition was the most prevalent collection management practices existing in libraries in higher institutions in Ekiti State; followed by selection and collection development policy, while weeding was the least. The hypothesis test also revealed that big data and collection management practice significantly influence the quality service delivery of librarians in higher institutions in Ekiti state. In addition, both big data and collection management practices have a significant combined influence on quality service delivery. The study concluded that despite existing measures promoting quality service delivery, there is considerable room for improvement. Therefore, it was recommended that favourable environment as well as capacity building training for librarians should be put in place to ensure that librarians deliver a high level of quality service in Ekiti State. Keywords: Big Data, Collection Management Practices, Library, Quality Service Delivery, Institution Libraries Word Count: 288enBig DataCollection Management PracticesLibraryQuality Service DeliveryInstitution LibrariesThesis