This study investigates the role of administrative governance mechanisms in enhancing institutional integrity and transparency while reducing administrative corruption in public institutions. Employing a quantitative analytical approach, primary data were collected through a structured questionnaire distributed to 50 respondents across oversight bodies, inspection departments, and academic experts in Jordan, yielding a 90% response rate (n = 45). The analysis, based on descriptive and inferential statistics (Ka² tests, α = 0.05), demonstrated that the application of governance principles, particularly transparency, accountability, and administrative oversight, was significantly associated with improved institutional performance and a measurable decline in perceived corruption. Specifically, the study found that respondents largely agreed (mean = 4.04; SD = 1.10) on the effectiveness of regulatory and legal frameworks in combating corruption, while 88% supported the role of continuous monitoring in promoting integrity. Sensitivity analyses confirmed the robustness of these relationships across stakeholder categories. From the findings, a major standing for the immediate modernization of legal-administrative frameworks, training for governance implementation, and institutionalization of oversight mechanisms emerges. Concluding that administrative governance is vital to institutional integrity and sustainability, this study's contribution lies in filling the gap by providing an evidence-based argument pertinent to anti-corruption policies, legal reforms, and modernizing the public sector within developing contexts.