Heinrich I von Gleichenstein

Heinrich I von Gleichenstein (c.1202–1257) was a son of Count Lambert II of Gleichen. On the division of his father's inheritance he took the Eichsfeld lands.

After Velsecke Castle was destroyed in war in 1234, he rebuilt it in 1241–1246 as Gleichenstein and took the castle's name for his line. He ruled as count of Gleichenstein until his death on 20 January 1257; his wife was Mechtild of Schwerin.