This study aims to analyze the influence of Muslim-Friendly Tourism and Tourism Promotion on Muslim tourists' interest in visiting Mamasa Regency, and to examine the role of religiosity as a moderating variable. The research method uses a quantitative approach with an associative research type. Data were obtained through distributing questionnaires to Muslim tourists and analyzed using Structural Equation Modeling (SEM) based on Partial Least Square (PLS). The results show that Muslim-Friendly Tourism and Tourism Promotion have a positive and significant effect on Muslim tourists' interest in visiting, while religiosity strengthens this relationship. The implications of this study emphasize the importance of improving halal facilities, optimizing digital tourism promotion, and integrating religious values into destination development strategies so that Mamasa can develop as a Muslim-friendly tourist destination in West Sulawesi.