The changes experienced in the digital era require academic library staff to constantly update, expand, and develop their skills in order to carry out their roles efficiently and remain relevant in the provision of services to clients. Consequently, academic libraries have been among the first organizations to adopt knowledge sharing as a means to enhance the provision of services to clients. Several studies on knowledge sharing in academic libraries have been conducted in recent years. However, the focus of these discussions has been on understanding the knowledge sharing practices in academic libraries, and on technology as a factor making knowledge sharing possible so as to improve service provision in this context. Delta State University (DELSU) has yet to develop, adopt and formalize adequate strategies for sharing knowledge so as to improve service provision. This article explores the barriers to knowledge sharing among staff at the DELSU library and suggests strategies to enhance knowledge sharing among staff for improved service provision. A mixed method research approach and case study research design were adopted. A census was conducted on the target population, consisting of the entire staff at the DELSU library, using questionnaires that comprised both open and closed ended questions, while seven heads of department from the various library sections were purposively sampled for the collection of data through interviews. Social exchange theory provided the underpinning for the study. The findings revealed a lack of effective knowledge sharing for service provision in the library. The absence of a knowledge sharing culture; the absence of information and communication technology tools and infrastructure; a lack of motivation; and inferiority and superiority complexes among staff hindered knowledge sharing, with concomitant repercussions for service provision in the library. Strategies for knowledge sharing among the staff for improved service provision were suggested.