This chapter explores the complex and multifaceted nature of loneliness within LGBTQ+ communities, highlighting how experiences of loneliness differ from those in the general population due to intersecting social, psychological, and structural factors. Drawing on empirical research and theoretical frameworks, including the Minority Stress Model and the Health Equity Promotion Model, the chapter examines how discrimination, stigma, internalized negativity, and social exclusion contribute to elevated loneliness among LGBTQ+ individuals. Particular attention is given to subgroups such as bisexual, transgender, and nonbinary people, who often face compounded marginalization. The chapter identifies both general and LGBTQ+-specific risk factors for loneliness, including low income, chronic illness, living alone, and concealment of identity. It also emphasizes protective factors such as community connection, social support, and resilience. While loneliness is prevalent, many LGBTQ+ individuals demonstrate significant resilience and maintain strong social ties through chosen families and community engagement. The chapter concludes by advocating for multi-level interventions—individual, relational, and structural—to address loneliness. These include inclusive mental health services, community-building initiatives, and policy reforms that combat discrimination and promote equity. Ultimately, there is a need for a nuanced understanding of LGBTQ+ loneliness that recognizes diversity within the community and centers both vulnerability and strength.