In recent years, social media has increasingly been utilized as a main tool in the banking sector; accordingly this study investigates its role on the financial performance of Islamic banking system in the Middle East through religious values, bank personnel’s professionalism, and trust. This study utilized cross-sectional research design and data were collected through survey questionnaire. Partial Least Square – Structural Equation Modeling (PLS_SEM) was employed to analyze the data. The results suggest that social media plays a positive and crucial role in the conveyance of messages and postings particularly on religious values to Islamic banking customers. Consequently, it contributes in fostering customers’ trust and enhancing bank personnel’s professionalism. These factors are expected to improve the financial performance of the Islamic banking system. This study stands out as a pioneer study in examining the unique relationship between the social media and religious values, bank personnel’s professionalism, trust and the financial performance of the Islamic banking system. This study underscores the significant role of bank personnel in promoting financial performance through a deep understanding of religious values and their relationship with customers. This study provides valuable insights to bank personnel aiming to develop strategies to promote good standing of financial performance of Islamic banking system.