Advances in early detection, treatment, and symptom management have generated significant excitement and brought increased visibility to lung cancer care. Despite this promise, lung cancer stigma, defined as the experience and internalization of negative appraisal and devaluation from others, remains a substantial barrier to optimal lung cancer care. Lung cancer stigma is common; recent work suggests that over 70% of individuals with lung cancer report clinically significant levels of stigma. Research has demonstrated pervasive negative consequences of lung cancer stigma, including reduced involvement in early detection interventions, negative psychosocial impact, impaired communication and self-advocacy, inadequate access to diagnosis and treatment, and limited public support for lung cancer research and care. In an effort to best understand modifiable targets for intervention, researchers have addressed the mechanisms of lung cancer stigma and ways to reduce it, including a focus on the individual, lung cancer clinicians, caregivers, and larger societal messaging. Expanded efforts in research, clinical care, and policy are needed to further address lung cancer stigma and fulfill the promise of reduced lung cancer burden.