This study examines the influence of 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 higher institution libraries in Ekiti State. 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 were tested at a 0.05 level of significance using inferential statistics. The finding of this showed 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 collection management practices significantly influence the quality service delivery of librarians in higher institutions in Ekiti state. The study concluded that despite existing measures promoting quality service delivery, there is considerable room for improvement. The study recommended among other that the management of higher institutions in Ekiti State should organize periodic capacity building for librarians in those institutions to ensure that their skills are more improved to enrich the quality of library service delivery