The study aims to investigate the mediating role of internet banking in the relationship service quality and customer satisfaction within the financial sector in Nigeria. Explanatory design was employed to examine the relationship between internet banking and service quality (independent variables) and customers’ satisfaction (dependent variable). Questionnaire was personally administered to elicit data from 280 customers of selected financial institutions in Nigeria. The Statistical Package for Social Sciences (SPSS) version 23 was used for data analysis. The study showed a significant relationship between internet banking and customer satisfaction.

Also, the result of the study found a positive significant relationship between service quality and customer satisfaction. Managerial implications and suggestions for future studies are discussed.