Charles Louis, Hereditary Prince of Baden (February 14, 1755 – December 16, 1801) was heir apparent of the Margraviate of Baden. He was born in Karlsruhe.

He was the son of Margrave Charles Frederick (who in 1803, after Charles Louis's death, became the elector and in 1806 the first Grand Duke of Baden) and Landgravine Caroline Louise of Hesse-Darmstadt (July 11, 1723 - April 8, 1783), the daughter of Landgrave Louis VIII of Hesse-Darmstadt.

He was an ancestor of Franz Joseph I of Austria, Elisabeth of Austria-Hungary, Nicholas II of Russia and his wife Alexandra Feodorovna (Alix of Hesse), Lord Mountbatten and Prince Philip, Duke of Edinburgh, among others.

Charles Louis married his first cousin Landgravine Amalie of Hesse-Darmstadt (June 20, 1754 – July 21, 1832, on July 15, 1774). She was the daughter of Landgrave Louis IX of Hesse-Darmstadt.

They had eight children:

Works of history mention that his children succeeded well in marriage market and that the Hereditary Prince was the force behind that. At the time of his death in Arboga, Sweden (which occurred during the visit to his fourth daughter, the Queen of Sweden), two of his other daughters were, respectively, Electress of Bavaria and the newly ascended Empress of Russia.

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