This study on the Use of Interpersonal Communication Skills by Reference Librarians in Federal Academic Libraries in Kogi State, Nigeria was carried out. Four research questions were raised which soughtto find out the types of reference and information services provided by librarians in federal academic libraries, the interpersonal communication skills possessed by librarians for reference and information services in federal academic libraries, the interpersonal communication skills utilised by librarians for reference and information services in federal academic libraries in Kogi State among others. Quantitative research method was adopted using survey design. The target population of the study consisted of all librarians of the three academic libraries of federal tertiary Institutions in Kogi State with total number of 47. The instrument for data collection was the questionnaire. Data collected were descriptively analyzed using frequency tables, simple percentages mean and standard deviation. The findings of the study revealed among others thatassisting users in using the library and information and referral service were the major types of reference and information services provided by librarians, The ability to serve the users with the right information was the major interpersonal communication skills the librarians possess for the provision of reference and information services, ability to speak fluently to the users, the ability to understand the users? query were the major interpersonal communication skills utilised by the librarians for reference and information services in federal academic libraries in Kogi State. It could be concluded that there exist interpersonal communication between reference librarians and library users but not very effective and could be one of decline in reference patronage in the Federal University Lokoja, Federal Polytechnic Idah and Federal College of Education Okene. It was recommended among others that the reference librarians should provide morereference services to the users in satisfying their needs. Reference librarians should adequatelyserve their users with the right information, at the right time so that the users would be satisfied with the reference and information services provided by the reference librarians and reference librarians should be adequately trained to be able to use the ability to speak fluently to the users, the ability to understand the users query as parts of interpersonal communication skills they utilised in the provision of reference and information services in federal academic libraries in Kogi State.