BackgroundPsychological resilience plays a crucial role in the well-being of community-dwelling older adults. This study aimed to evaluate the effectiveness of a resilience-building nursing intervention on enhancing psychological well-being in this population. MethodsA randomized controlled trial was conducted with 84 community-dwelling older adults in Abha, Saudi Arabia. Participants were randomly assigned to either the intervention group (resilience-building nursing intervention) or the control group (standard care). Psychological resilience and quality of life were assessed using validated scales at baseline, post-intervention, and follow-up. ResultsThe intervention group showed significant improvements in psychological resilience (mean difference: +3.2, p = 0.001) and quality of life (mean difference: +5.4, p = 0.002) at follow-up compared to the control group. Factors influencing resilience included age, gender, socioeconomic status, health status, intervention exposure, community engagement, and living arrangements. ConclusionThe resilience-building nursing intervention effectively enhanced psychological well-being among community-dwelling older adults. Integrating such interventions into routine nursing care can promote holistic well-being and enable older adults to thrive within their communities.