Given the increasing rate of ecosystem degradation in recent years, there is an urgent need to devote greater attention to ecosystem restoration. Moreover, there has been a growing body of research on ecosystem restoration over the past decade. Accordingly, the present study seeks to collect, examine, and synthesize the major findings of Iranian studies on ecosystem restoration over the past two decades in an attempt to provide a unified, coherent, and comprehensive perspective on restoration science in Iran. The study employs a meta-analysis approach, and the statistical population comprises peer-reviewed scientific articles on ecosystem restoration across five ecosystem types: rivers, lakes, wetlands, forests, and rangelands. Following a systematic search of scientific databases and based on the predefined inclusion criteria, 8,507 articles were initially identified. After five stages of screening, 82 articles were ultimately selected for the final analysis. A structured worksheet designed in Microsoft Excel was used to organize and record the extracted information. For data analysis, Roberts' six-stage research synthesis framework was employed, involving both open and axial coding. The findings indicated that two of the most frequently addressed components in the field of ecosystem restoration were ecosystem restoration strategies and factors affecting its effectiveness. The findings further suggested that the body of English literature on ecosystem restoration is considerably more extensive than that of the Persian literature. Given the urgent and pressing need for the rehabilitation and restoration of the country's ecosystems, more attention should be devoted to this field. Finally, the policy recommendations of the present study are as follows: (1) establishing a national knowledge-transfer platform to bridge the gap between international restoration science and local implementation contexts; and (2) implementing capacity-building plans to develop locally grounded restoration expertise tailored to Iran's unique biogeographical conditions.