Großer Kornberg, Mountain summit in Fichtel Mountains, Germany.

Großer Kornberg is a granite summit in the northeastern part of the Fichtel Mountains in Bavaria, rising to 827 meters and forming the northeastern corner of this mountain range. The peak is fully covered with forest and surrounded by other summits of similar height.

The oldest known document naming the mountain dates to 1317, when it was called the Kurnberg. In Middle High German, kurn means 'mill', so the name meant 'mill mountain'. A village called Mühlhausen stood on its northwest slopes but was abandoned by the end of the 14th century. The name does not refer to grain (Korn), as the stony ground was never suited to farming.

The name Kornberg likely derives from Middle High German kurn, meaning mill, not from grain; a village called Mühlhausen on the northwest slope was abandoned by the end of the 14th century. The tower's name Schönburgwarte comes from Prince Ernst of Schönburg-Waldenburg, who donated the site and wood for the 1885 wooden tower. Since 1964 a small granite figure called the "tower ghost" sits in the entrance, inscribed "Der Turmgeist dankt für Deine Spende".

Several marked hiking trails lead to the summit, and the Schönburg watchtower at the top offers open views over the surrounding mountains. The paths run through dense forest, so good footwear is advisable, especially after rain.

Old granite quarries at the base of the mountain expose different geological layers that are rarely found so close together. The stone near the bottom is coarse-grained, while the rock higher up shows a noticeably finer texture.