Karl Johann Bernhard Karsten (26 November 1782 – 22 August 1853) was a German mineralogist known for contributions made to the German metallurgy industry.
He was born at Bützow in Mecklenburg-Schwerin and initially studied law in . From 1801 he devoted his time to mining and metallurgy. In 1819 he was named mining councilor to the Ministry of the Interior in Berlin. He was a major factor in the emergence of the zinc industry in Silesia.
He was author of several comprehensive works, including:
He was well known as editor of the Archiv für Bergbau und Hüttenwesen (Archive for mining and metallurgy; 20 volumes, 1818-1831); and (with Ernst Heinrich Karl von Dechen) of the Archiv für Mineralogie, Geognosie, Bergbau und Hüttenkunde (26 volumes, 1829-1854).
He died at Berlin in 1853. His son, Dr. Hermann Karsten (1809-1877), was a professor of mathematics and physics at the .