Hermann II (c. 1342 – 10 June 1413), nicknamed the Scholar (German: der Gelehrte), was Landgrave of Hesse from 1376 to 1413.

[1][2] Louis the Junker was a son of Otto I, Landgrave of Hesse.

After the death of Otto the Younger, the son and heir apparent of Henry II, the latter appointed his nephew Hermann as co-ruler and heir in 1367.

The first marriage on 3 February 1377 was to Johanna, countess of Nassau-Weilburg [c. 1362-1383] but produced no children.

The second was on 15 October 1383 to Margaret of Hohenzollern-Nuremberg [c. 1360-1406], daughter of Frederick V, Burgrave of Nuremberg.