Research has documented associations between relationship stigma, relationship quality and adverse health outcomes among sexual and gender minority couples. However, this work focused primarily on one aspect of an individuals or a couples identity rather than understanding the intersections of multiple, stigmatized social identities. As part of a larger project focused on testing the efficacy of a couples-based intervention to improve HIV medication adherence, 144 couples completed measures of relationship stigma, relationship quality, mental health, and substance use. A subset of 25 participants completed in-depth interviews to better understand the phenomenon of relationship stigma and its impact on their relationships. Quantitative results demonstrated that greater relationship stigma was associated with reduced relationship satisfaction and commitment, as well as greater closeness discrepancy and depressive symptoms. Qualitative findings provided nuanced insights into forms of relationship stigma that often intersected with other types of stigma and related forces of social and structural violence. Results also demonstrated the differential impact that relationship stigma had on couples and the ways in which individuals make adjustments to cope with or actively combat societal stigma. Findings illustrate the importance of attending to intersecting forms of stigma in addressing the well-being of sexual and gender minority couples.