Hermann II, Count of Celje (Count of Cilli) (about 1365 - 13 October 1435), Ban of Croatia, Slovenia and Dalmatia, was son of Herman I, Count of Celje and his wife Katerina of Bosnia.
About 1377, he married Anna von Schaunberg.
In 1396 Herman II, a soldier in Sigismund of Luxembourg's crusade against the Turks, saved Sigismund's life in battle, and was rewarded with the county of Zagorje and the town of Varazdin.
In 1408, Herman's daughter, Barbara, married Sigismund, King of Hungary, who later became King of Bohemia and Holy Roman Emperor.
