: Analyzing of the Dynamics of Sunni Fuqaha Thought on Ibdāl (Selling) and Istibdāl (Replacement) of Waqf (Endowment) Objects. This study aims to analyse the Sunni jurists thought (Hanāfiyah, Mālikiyah, Shāfi\u27ites, and Hanābilah) on selling (ibdāl) and replacement (istibdāl) waqf objects. This study uses a qualitative approach with descriptive analytic method. The data were compiled from the texts of each schools, namely: Hanāfiyah, Mālikiyah, Shāfi\u27ites, and Hanābilah, coupled with other sources in the form of references, documents and articles related to the issue. The results of this study conclude that only the Hanafi schools allow ibdāl and istibdāl of wakaf objecta for the benefit of the waqf itself