This study examined the relationship between the multi-dimensionality of store layout and customer loyalty. Five hypotheses were formulated. To test the hypotheses, a survey of 400 respondents selected from ten supermarkets in Port Harcourt was carried out. Results showed positive relationship exists between each of the dimensions of store layout and customer loyalty. The study, therefore, concludes that store layout could be a means of gaining strong competitive advantage in a retail venture. Valuable means of achieving customer loyalty were also advanced in the study.