Stage 1 Registered Report: How is the current context of Islamophobia, anti-Muslim prejudice, and discrimination, associated with Muslim mental health in Western countries? A body of evidence suggests that experiences of discrimination and racism are associated with negative mental health outcomes for marginalized, minority populations (e.g., Paradies et al., 2015). Studies specifically with Muslim populations in Western countries have found mostly similar findings of an association between discrimination and negative mental health outcomes (Samari, Alcalá, & Sharif, 2018). The varied results in the literature calls for using statistical rigor and synthesis to provide clarity of the etiology of psychopathology in the Muslim community. In this study, we plan to conduct meta-analyses of the associations of both perceived discrimination and mental health and life stressors and mental health for Muslims living in Western countries. We aim to contribute to the literature on the experiences of Muslims and to the debate on the contribution of discrimination vs. life stressors on the development of mental health using meta-analytic methods. For added specificity, we examine both perceived individual discrimination and group discrimination and positive and negative mental health outcomes. We also plan to examine various study-related (e.g., publication bias), demographic, and identity-related moderators in these associations. In the current sociopolitical climate, this study is an important step to better serve the needs of the growing global Muslim community.