Burgruine Petersberg

{{Expand German|topic=struct|date=July 2009|Burg Petersberg}}

{{Infobox military structure

|name=Burgruine Petersberg

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|location= Carinthia, Austria

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|image= Friesach Petersberg Burg und Peterskirche 14042007 01.jpg

|image_size= 300px

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|type= Castle

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Burgruine Petersberg is a castle in Friesach, Carinthia, Austria.

Today the castle is home to the Friesach City Museum, which features exhibits about the town's history, culture, mining industry and trade.