This study aims to examine the influence of knowledge management process on Fintech innovation through the moderating role of managers' demographic characteristics (age, sex, education, experience, and position) in commercial banks operating in Lebanon. To accomplish this aim, a conceptual framework based on knowledge-based theory and literature review was developed. The data for this research was collected through a self-administered questionnaire with 181 respondents. The target respondents were managers of commercial banks in Lebanon. The empirical findings of the study suggest that the practice of knowledge management functions practice has a positive and significant relationship with Fintech innovation. The findings also provide support for the moderating effect of only two demographic characteristics of bank managers: experience and position on the relationship between knowledge management and Fintech innovation in commercial banks in Lebanon. The study findings may aid future researchers in their quest to understand the inherent relationships that lie between the constructs' questions and provide a platform for banking managers in their efforts to improve their innovation strategies through knowledge management. Furthermore, research recommendations, limitations and future directions are discussed in the last sections.