Lesbian, gay, bisexual, and transgendered (LGBT) people continue to experience various forms of oppression and discrimination in North America and throughout the world, despite the social, legal, and political advances that have been launched in an attempt to grant LGBT people basic human rights. Even though LGBT people and communities have been actively engaged in community organizing and social action efforts since the early twentieth century, research on LGBT issues has been, for the most part, conspicuously absent within the very field of psychology that is explicitly focused on community research and action--Community Psychology. The psychological and social impact of oppression, rejection, discrimination, harassment, and violence on LGBT people is reviewed, and recent advances in the areas of LGBT health, public policy, and research are detailed. Recent advances within the field of Community Psychology with regard to LGBT research and action are highlighted, and a call to action is offered to integrate the knowledge and skills within LGBT communities with Community Psychology's models of intervention, prevention, and social change in order to build better theory and intervention for LGBT people and communities.