HSH Prince Karel Schwarzenberg (Czech pronunciation: ) (born 10 December 1937 in Prague, Czechoslovakia) is a Czech politician.

His full name is Karl Johannes Nepomuk Josef Norbert Friedrich Antonius Wratislaw Mena von Schwarzenberg. He is a scion and current head of the House of Schwarzenberg, the eldest son of Prince Karl VI of Schwarzenberg and Princess Antonie von Fürstenberg. His full title is His Serene Highness The Prince of Schwarzenberg, Count of Sulz, Princely Landgrave in Klettgau, and Duke of Krumlov.

Prince Schwarzenberg is a longtime friend of Václav Havel, and a member of the Forum 2000 foundation. From 1984 to 1990 he was chairman of the Helsinki Committee for Human Rights.