This quantitative non-experimental correlational study aimed to examine the significant association between Information System (IS)/Information Technology (IT)/Business Intelligence System (BIS) project managers' digital leadership skills and BIS project success. It also sought to determine if PMP® certification moderated this relationship. The study, conducted with a diverse sample of 64 IS/IT/BIS (47% male) project managers, of whom 75% resided in the United States (U.S.), revealed significant findings. Point biserial correlational findings showed that the demographic and work variables were not significantly correlated with BIS project success (r[subscript p] = 0.15, p = 0.239). As covariates did not need to be entered into the regression model, a multiple linear regression (MLR) for moderation was conducted to address the study's research questions. The data met the assumptions for MLR. Moderated MLR findings showed that digital leadership was significantly associated with BIS project success ([beta] (64) = 0.61, p = <0.001): as participants' digital leadership increased, so did their project success. However, moderated MLR findings showed that PMP® certification perceptions did not significantly predict project success ([beta] (64) = -0.02, p = 0.845), nor did it moderate between digital leadership and project success ([beta] (64) = 0.14, p = 0.189). The study is the first to demonstrate a strong link between digital leadership and project success among project managers. These findings have practical implications for project managers, providing a foundation for future research and application and improving project management in the digital era. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]