Blankenstein () is a village and a former municipality in the district Saale-Orla-Kreis, in Thuringia, Germany. On 1 January 2019 it became part of the new municipality Rosenthal am Rennsteig. Prior to 2019, Blankenstein had been the seat of the Saale-Rennsteig Verwaltungsgemeinschaft (municipal association), which was disbanded in the reorganisation.
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Rathaus-Blankenstein.jpg|The city hall of Blankenstein
83 Zellstoff-Fabrik Blankenstein.jpg|Pulp factory in Blankenstein
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