LGBT Theory and Queer Theory serve as tools, frameworks, and orientations which allow researchers, scholars, activists, and others to understand the world in relation to issues of gender and sexuality and to varying degrees, power. This snapshot chapter provides readers with the basic tenets of both LGBT Theory and Queer Theory along with the historic relationship between the two and their unique features. Readers have the opportunity to consider ways in which these theories might be useful in their own practice through examples of how Needham Yancey Gulley has leveraged each for differing projects. One example relates to an activist-oriented assessment project and another an academically-oriented research project, showing that these Theories can be leveraged for social justice in multiple settings.