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Background: Disparities in lung cancer outcomes persist among Black Americans, necessitating targeted interventions to address screening inequities. This paper reports the development and refinement of Witness Project® Lung, a community-based initiative tailored to the specific needs of the Black community, aiming to improve awareness and engagement with lung cancer screening. Methods: Utilizing a user-centered design and guided by the original Witness Project® framework – an evidence-based lay health advisor intervention program originally developed to increase knowledge and awareness about breast cancer risk and screening in the Black community and later trans-created to the cervical and colorectal cancer screening contexts - Witness Project® Lung was developed and refined through qualitative input from key stakeholders in the Black faith community. Guided by the PEN-3 model and the Conceptual Model for Lung Cancer Screening Participation, the program underwent a rigorous development process to ensure cultural relevance and was pilot tested in the New York City metropolitan area in faith-based and community-based organizational sites in the Black community. Results: Pilot testing conducted in New York and New Jersey demonstrated high acceptability, satisfaction, and increased knowledge among participants. The community-based approach, culturally sensitive messaging, and partnerships with faith-based organizations were critical to the refinements of Witness Project® to Witness Project® Lung. The program's focus on addressing social determinants of health and its delivery by trained lay health advisors showcased feasibility and potential effectiveness. Witness Project® Lung presents a promising alternative to traditional health system-based interventions for improving lung screening rates among Black Americans. Conclusions: The community-based, culturally tailored approach, coupled with the involvement of trusted community leaders, has the potential to reduce disparities in lung cancer outcomes. Further research is needed to assess the long-term impact and cost-effectiveness of Witness Project® Lung in promoting lung screening uptake and improving health outcomes within underserved populations. [ABSTRACT FROM AUTHOR]