<![CDATA[The concept of supply in Islamic economics possesses a normative foundation that fundamentally distinguishes it from conventional supply theory. This study systematically examines Islamic supply theory and its relevance to anti-monopoly practices and business competition within the Islamic economic framework. A library research method with content analysis technique was employed, drawing on national SINTA-indexed journals, Scopus-indexed international journals, scientific books, and official institutional reports from 2020–2025. Findings reveal that Islamic supply theory is grounded in the principles of justice (al-'adl), prohibition of monopoly (ihtikâr), and dignified competition (musâbaqah), which substantively align with the spirit of modern competition regulation. Monopolistic and collusive oligopolistic practices that harm the public contradict maqashid al-shariah, particularly in the dimension of wealth protection (hifzh al-mâl). Indonesia's anti-monopoly regulation, as embodied in Law Number 5 of 1999, possesses significant normative convergence with Islamic economic principles. This research reinforces the urgency of integrating Islamic values into national competition policy to achieve a just, transparent, and civilised market.]]>
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