PurposeWith the materialization of literature on strategic change, it is clear that organizational learning and organizational dynamism have been among the most notable areas of study. The purpose of this paper is to extend the literature on strategic management by examining the mediating effects of organizational learning and the moderating role of environmental dynamism on the relationship between strategic change and firm performance.Design/methodology/approachA survey questionnaire was administered to 650 respondents who were both corporate and business-level managers of 22 main deposit money banks (commercial banks) and their branches across the country. In total, 630 questionnaires were returned and 587 were used after following all the processes of data preparation. Path analysis was employed to test the hypotheses in this study using Smart PLS 3.FindingsThe study found a significant mediating effect of organizational learning on the relationship between strategic change and firm performance. Although no significant moderating role of environmental dynamism was found, the directions of the path coefficients are consistent with the hypothesis. All the relationships between the constructs are significant.Research limitations/implicationsIt is paramount for managers to understand the type of environment and learning that fits diverse kinds of strategic changes in order to improve firm performance. It is evident that changes that are not proactive and generative organizational learning may seem dangerous for a firm. However, organizations should learn to incorporate the change to be able to compete in a dynamic competitive environment.Originality/valuePrior studies on strategic change, environmental dynamism and organizational learning have mainly focused on manufacturing and construction industries in the developed countries, but less has been done in the service sector, particularly the banking organizations in developing countries. Nigeria is one of those countries. Therefore, this study focuses on the links between strategic change and firm performance, moderating role of environmental dynamism and the mediating effect of organizational learning within the context of the Nigerian deposit money banks.