In pursuit of a comprehensive understanding of Lean Six Sigma (LSS) adoption within Saudi Arabian maintenance companies, this research aimed to evaluate the prevalence of its utilization and gauge the level of comprehension among practitioners. Furthermore, this study sought to pinpoint the Critical Success Factors (CSFs) crucial for the effective implementation of LSS. Employing an electronically disseminated survey, this investigation delved into the realm of LSS, with a specific focus on identifying and assessing these pivotal CSFs. This study encompassed data from 77 participants employed across diverse maintenance organizations in Saudi Arabia, gathered through a digital questionnaire and analyzed utilizing SPSS 22.0. This study used a variety of statistical techniques, such as descriptive statistics, frequency analysis, t-tests, and one-way ANOVA, to investigate the adoption of LSS and identify key success factors. According to the report, 77.9% of Saudi maintenance businesses have yet to implement LSS, with quality improvement serving as the primary reason for those who have. Comprehensive LSS training, effective people selection, increased awareness, and a strong, data-driven approach are all critical aspects in successful LSS deployment. Furthermore, this study emphasized the importance of training, staff selection, and knowledge of the benefits of LSS in influencing the effectiveness of implementation. Finally, this study provided significant insights into the barriers and enablers of LSS adoption, making both theoretical contributions to the academic area and practical recommendations for firms looking to use LSS for continuous improvement.