Namesakes
Roman and Byzantine Emperors:
1 emperor
Emperor Leo (a.k.a. Leontius) 695-698 
Saints:
9 saints
Saint Leontius ?-70
Saint Leontius ?-300
Saint Leontius ?-320
Saint Leontius ?-337
Saint Leontius ?-432
Saint Leontius the Elder ?-541
Saint Leontius the Younger ?-565
Saint Leontius of Saintes ?-640
Saint Leontius ?-1077