Steinwald, Nature reserve in Wunsiedel district, Germany.

Steinwald is a mid-mountain range and nature park in Bavaria's Upper Palatinate, reaching 946 m at its highest point. It lies south of Marktredwitz and north of Erbendorf, separated from the Fichtel Mountains by the Waldershof trough. The range consists mainly of granite, with numerous granite blocks and rock bastions in odd shapes, and is bordered to the south and east by basalt hills.

The granite rocks of Steinwald formed approximately 290 million years ago and established the region's geological foundation. The mineral deposits from these rocks later prompted mining development across northern Bavaria.

The name Steinwald means "stone forest", referring to the numerous granite blocks and rock bastions with fanciful shapes, bearing names such as Katzentrögel, Zipfeltannenfelsen and Saubadfelsen. The Siebenstern, symbol of the Fichtelgebirge Club, grows in these woods. The König-Otto-Quelle at König-Otto-Bad near Wiesau, one of Europe's most iron-rich springs, is named after Otto I of Greece, brother of Prince Regent Luitpold, and its water is still bottled by König-Otto-Sprudel.

The Steinwald is reached from Marktredwitz to the south and Erbendorf to the north, in the Tirschenreuth district. Snowdrifts and storms can make paths impassable in winter, and snow often lies until mid-May in the high areas. Spring arrives about two weeks later than in the surrounding hills.

The Steinwald's granite blocks carry odd local names recorded in the sources: Katzentrögel, Zipfeltannenfelsen and Saubadfelsen. The range also holds one of Europe's most iron-rich springs, the König-Otto-Quelle at König-Otto-Bad near Wiesau, named after Otto I of Greece, brother of Prince Regent Luitpold; its water is still bottled as König-Otto-Sprudel.