Leonidas,, a Greek physician who was a native of Alexandria, and belonged to the sect of the Episynthetici. As he is quoted by Caelius Aurelianus, and himself quotes Galen, he probably lived in the 2nd and 3rd centuries. Of his writings, which appear to have been chiefly related to surgical subjects, nothing now remains but some fragments preserved by Aëtius and Paul of Aegina, from which we may judge that he was a skillful practitioner.