St. Leonides of Alexandria (Greek: Λεωνίδης) was a Christian martyr who lived in the second and early third centuries AD.

According to the Christian historian Eusebius, Leonides’ son was the early Church father Origen.[1] In the same passage Eusebius tells us that Leonides was martyred during the persecution of the Roman emperor Septimius Severus in the year 202 AD.

Condemned to death by the Egyptian prefect Lactus, he was beheaded, and his property seized.