This research takes the study of the “other” in Aristotelian thought, delving into the character of θεός. Throughout the article seeks to answer the questions: What is “other” (ἄλλος)?, and how it is understood by Aristotle otherness (ἑτερότης)? thus, at a last stage, to outline a reflection with regard to θεός such as otherness (ἑτερότης), radicalizing the aristotelian thesis.