Muslim philosophers commonly endorse a version of the so-called ‘privation theory of evil’ (PTE), according to which all essential evils consist in the non-existence of an entity or privation of a deserved perfection. In this article, I first provide a short sketch of PTE based on clarification of its main conceptual components. Then I examine the main reasons for the truth of PTE offered by Muslim philosophers and show that none of them is sufficiently plausible. Finally, I investigate the most significant objections against PTE and criticize the proposed responses.