Kopaniny (German: Krugsreuth) is a village in Karlovy Vary Region, Czech Republic. It is one of the nine town districts of Aš. In 2001 the village had a population of 94.

Kopaniny lies 5 kilometres northeast from Aš, about 673 meters above sea level, and is surrounded by forests.

Kopaniny was probably founded in the 12th century, but it is first mentioned in 1315, as a property of the Feiltsch family from Sachsgrün. In the middle of the 14th century village belonged to Neuberg property, and in the late 14th century it was bought by the Zedtwitz.

Progress of population of Kopaniny

Year	1850	1930	1947	1961	1970	2001
Population	635	914	297	219	177	94

• Church of the Sacred Heart from 1890,
• Ruins of the Zedtwitz castle,
• German cemetery with Zedtwitz Tomb.

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  Church of the Sacred Heart.
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  Ruins of Zedtwitz castle.
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  Zedtwitz castle in 1907.