Abstract: The purpose of this paper is to the investigate the impact of e-banking on customer satisfaction of private commercial banks in Galle district of Sri Lanka, due to the lack of application of e-banking practices among banking customers commonly to determine the customers satisfaction. Seven hypotheses were developed based on the constructed conceptual framework derived from the Marketing and consumer behavior literature. The data were collected over survey method by purposively and snowball administering structured questionnaires from 150 respondents who used e-banking in Galle district, Sri Lanka. First confirmatory factor analysis was performed to explore the significance of atmospheric dimensions and the multiple regression analysis was carried out to measure the impact of seven e-banking practice variables on customer satisfaction.