BACKGROUND: The primary purpose of this study was to establish the feasibility of a couple-based Vivekananda Yoga (VKC) intervention in lung cancer patients and caregivers. Secondly, we examined preliminary efficacy regarding quality of life (QOL) outcomes. METHOD: In this single-arm feasibility trial, patients with lung cancer undergoing radiotherapy and their caregivers participated in a 15-session VKC program that focused on the interconnectedness of the dyad. We assessed pre-and post-intervention levels of fatigue, sleep disturbances, psychological distress, overall QOL, spirituality, and relational closeness. We tracked feasibility data, and participants completed program evaluations. RESULTS: We approached 28 eligible dyads of which 15 (53%) consented and 9 (60%) completed the intervention. Patients (mean age = 73 years, 63% female, all stage III) and caregivers (mean age = 62 years, 38% female, 63% spouses) completed a mean of 10 sessions and 95.5% of them rated the program as very useful. Paired t tests revealed a significant increase in patients' mental health (d = 0.84; P = .04) and a significant decrease in caregivers' sleep disturbances (d = 1.44; P = .02). Although not statistically significant, for patients, effect sizes for change scores were medium for benefit finding and small for distress (d = 0.65 and 0.37, respectively). For caregivers, medium effects were found for improvement in physical functioning (d = 0.50). CONCLUSION: This novel supportive care program appears to be safe, feasible, acceptable, and subjectively useful for lung cancer patients and their caregivers and lends support for further study.