Chapter 6. This chapter provides an overview of feminist history, theory, and clinical application in the mental health professions. From there, the authors will explore intersectionality theory and its connection to feminism as a means to understanding the multitude of identities and experiences of LGBTIQQA + individuals. It is also vital to explore discrimination within this community and its relevance to feminist theory, including the subtle and overt manner through which discrimination and exclusion take place at the micro, meso, and macro levels. The LGBTIQQA+ population as a whole has been subject to a range of discriminatory action, and the authors will provide an overview of the impact of discrimination on mental health. Finally, intersectional feminism will provide the foundation for understanding resilience and strength withing the LGBTIQQA+ community.