This paper examined the impact of customer satisfaction on customer loyalty. The objectives were: to determine the relationship between customer satisfaction and customer loyalty and to examine the impact of customer satisfaction on customer loyalty. Survey research design was adopted for this study. Primary and secondary sources of data were used. The primary data includes a structured questionnaire used to elicit information from the target respondents who were customers of a reputable bank in oyo while the secondary data encompass the use of related materials, journals and periodicals. Regression analysis was used to analyse the data. The findings shows that there is a significant relationship between customer satisfaction and customer loyalty (r = .617**, N= 107, P < .01). The implication of this result is that a 1% shift in customer satisfaction will cause a 61.7% shift in customer loyalty. The findings also shows the R2 value of 0.631 which reveals that customer satisfaction independently accounts for 63.1% of the variation in customer loyalty. The f-statistics of 33.500 reveals that the model is statistically significant at 0.05 significant level. It was concluded that a 1% shift in customer satisfaction will cause a 61.7% shift in customer loyalty. Also there is a significant relationship between customer satisfaction and customer loyalty. To this end, the study concluded that customer loyalty is a function of customer satisfaction.