Codex Hermogenianus
![Head from a statue of Diocletian, Istanbul Archaeological Museum](/Images/godic/202501/05/Diocletian_bust5122.png")
![Maynier's oil painting of Hadrian and Justinian with the Codex of Roman Law, 1803](/Images/godic/202501/05/Codex_Iustiniani_Meynier_Louvre_INV200925122.jpg")
The Codex Hermogenianus (Eng. Hermogenian Code) is the title of a collection of constitutions (legal pronouncements) of the Roman emperors of the first tetrarchy (Diocletian, Maximian Augusti, and Constantius and Galerius Caesars), mostly from the years 293–94.