Technological changes in the banking industry have led to significant transformation in customer services. Institutions have begun to offer their services through alternative channels, such as mobile banking. Despite its popularity, there is still resistance to the use of mobile banking among some customers. This study analyzes the factors that influence the adoption of mobile banking in Brazil. Due to the quantitative nature of this research, a survey (n = 411) was used for data collection. The influencing factors were analyzed and discussed using the UTAUT model. The results showed that performance expectation, perceived credibility and intention to use are the main factors that influence the adoption and use of mobile banking in Brazil. This research adds one empirical study that supports the UTAUT model - applied to mobile banking in Brazil. From a practitioner’s perspective, the results of this study may help bank managers to better target and promote investments related to mobile services focusing on bank security, and to market strategies in order to positively influence intentional behaviors in the use of mobile banking services.