his article examines the impact of service quality on customer loyalty in the Nigerian mobile telecom industry. The population of the study comprises 532 subscribers of mobile telecom service providers, T purposively spread across the six geo-political zones in the country to give a fair representation of the entire customer streams in Nigeria. A structured closed-ended questionnaire was used to collect information on user perceptions of service quality and customer satisfaction, which are antecedents of customer loyalty and retention. The formulated hypotheses were tested using Pearson Product-Moment Correlation coefficient to determine the relationship between the variables at 0.05% level of significance with the aid of Statistical Package for Social Package (SPSS). It was observed from the result of data analysis indicates a positive relationship between service quality and customer satisfaction, and between service quality and customer loyalty. However, the analysis also indicated a negative correlation between switching intention and customer satisfaction. The study therefore recommends that, to prevent subscribers from switching, telecom service providers must ensure that their service qualities are always high to guarantee high level of customer satisfaction. In addition, service firms must strive to know the expectations of their customers in terms of service quality and how they can meet such expectations. Keywords: Customer satisfaction, service quality, telecommunications, customer loyalty, customer retention, switching intention The Impact of Service Quality on Customer Loyalty in the Nigerian Mobile Telecommunication Industry Ode, Egena Department of Business Management Benue State University, Makurdi- Nigeria odeexpress@gmail.com, +2348069484645 Abstract pp 81-90