The objective was to review all peer-reviewed, scholarly articles on the mental health of members of The Church of Jesus Christ of Latter-day Saints from 2005 to 2022. Forty-six studies were identified. Research findings were consistent with the general research on R/S and mental health, which typically finds R/S related to better mental health. When comparisons are made, Latter-day Saints are typically found to have better mental health than those of other religions or no religion. It was found that in the last 10 years, research on sexual minorities has dominated the research on Latter-day Saints’ mental health. Although findings are nuanced, sexual minorities tend to have less favorable mental health when they are only somewhat enacting either a Latter-day Saint and/or sexual minority identity. The research literature on Latter-day Saints’ mental health is in its infancy, with few studies utilizing a high degree of methodologic rigor. More longitudinal and representative research is needed to better understand Latter-day Saints’ mental health. Further, more theoretical work is needed to provide a framework for explaining findings and guiding future research.