This book aims to explore the concept and strategies of managing the institutional reputation of Islamic endowments (Waqf). In certain historical periods, Islamic endowments faced systematic campaigns to tarnish their image, paving the way for their seizure and misappropriation. Restoring a positive public perception and strong institutional reputation for Waqf has become crucial, especially as the Waqf system undergoes transformation. Modern trends in establishing endowments involve creating large collective endowments with high market value or treating Waqf as a commercial venture. This topic is increasingly important due to the need to monitor and evaluate this role to achieve the best possible performance for Waqf institutions. The importance of managing the institutional reputation of Islamic endowments lies in improving their performance, enhancing resource efficiency, maximizing their value, and strengthening their market competitiveness. This supports their expansion and growth, enabling them to achieve the goals of the founders and maximize benefits for beneficiaries. Applying institutional reputation standards to Waqf institutions enhances their effectiveness, efficiency, and asset protection. The researcher believes that effective reputation management positively impacts the operational, financial, and liquidity aspects of Waqf institutions, as well as the various metrics used. This creates a comprehensive framework for their performance, supporting their sustainability and growth while serving the interests of stakeholders.