Glycerius (Italian: Glicerio) was Archbishop of Milan from 436 to 438.

He probably had been a tutor of the Western Roman Emperor, Valentinian III, a position that he possibly maintained while he was bishop of Milan.

Glycerius died on 15 September 438 AD, and was buried in the Church of Saint Nazarius and Celsus in Milan.

In that church fragments of the funeral epigraph of him have been discovered.

[2] Saint Glycerius has been erroneously confused as the Glycerius (c. 420 - after 480), who was one of the last of the Western Roman Emperors (reigned 473–474), and who became bishop of Salona after his deposition.