Battus I of Cyrene (Ancient Greek: Βάττος), also known as Battius the Lacedaemonian and Battus Aristotle (Βάττος Ἀριστοτέλης) and Aristaeus (Ἀρισταῖος) was the founder (Oikistes) of the Ancient Greek colony of Cyrene. He was its first king, the first Greek king in Africa and the founder of the Battiad dynasty. The butterfly Battus philenor is named after him.
