Public relations as a distinctive management function which helps establish and maintain good lines of communication, understanding, acceptance and co-operation between an organization and its publics. Thus, this paper studies the relevance of public relations in Federal University Gusau and Guarantee Trust Bank, Gusau. It explores the relevance of public relations as tools to improve channels of communication, understanding and acceptance with their publics in order to develop their organizations. Data collected was coded and analyzed using thematic content analysis. The paper shows that public relations is an increasingly important brand building tools in both private and public sectors and it also relevance in passing and advertising the activities of the institution and the bank respectively. This establishes a long-lasting relationship between the organizations and its publics and the host communities as a whole. The relevance of public relations was neglected in Federal University Gusau and Guarantee Trust Bank, Gusau. The main objective of this paper is to examine the Relevance of Public Relations in Public and Private Sectors. To attain such objective, it outlines some significant recommendations that will serves as guide to Nigerian institutions, banks and other related organizations.