This paper argues that reflections on evil and its origin formed part of philosophical inquiry already in the times of the Presocratics. It considers only those thinkers whose contribution to the issue may be characterised as noteworthy: Anaximander, the Pythagoreans, Heraclitus, Parmenides, Empedocles, and the Atomists. It is undeniable that none of the Presocratics presented an articulate theory of evil or a theodicy; therefore, the suggestions presented here are bound to remain conjectural. Still, it is my conviction that their fragments contain significant ideas related to evil’s origins. Insofar as they turned their attention to the problem of evil, the Presocratics displayed the following tendencies: (a) they declined to ascribe the existence of evil to the will of the gods. Instead, (b) the emergence of badness was seen as instigated by the disruption of the primeval harmony (Anaximander), or (c) coeval opposed principles in constant struggle for dominance were posited, one of which was the cause of good, the other of evil (Pythagoreans and Empedocles). (d) Attempts were made to make good’s existence dependent on the existence of evil or to declare the latter illusory (Heraclitus and Parmenides). (e) Emphasis was placed on the moral agents’ personal responsibility for badness (Democritus).