Service delivery is the interaction between librarians and the users of the library in order to satisfy their academic objectives. Nevertheless, past studies have shown low library service delivery as revealed in the impatient and unwillingness of librarians to assist information seekers, harsh and unpleasant attitude of librarians, uncomfortable infrastructure and inadequate staff strength. Though studies have been done to examine information literacy skills) and service delivery, they are scanty. It is on this note that this study investigated the influence of information literacy skills on service delivery of librarians in state university libraries in South-West, Nigeria. Survey research design was adopted for this study. The population of the study was 90 librarians from six state universities in South-West Nigeria. Total enumeration was used for the study. Adopted questionnaire was used to obtain data. Cronbach’s alpha reliability coefficient for the constructs ranged from 0.72 to 0.86. A response rate of 89% was achieved. Data were analyzed using descriptive and inferential (simple and multiple regression) statistics at 5% level of significance. Findings revealed that information literacy skills had no significant influence on service delivery of librarians in state universities in South-West, Nigeria. The study concluded that information literacy skill did not enhance service delivery of librarians in state universities in South-West, Nigeria. The study recommended that the management of the state university libraries should explore other factors that could enhance service delivery other than information literacy skills