Karl Ludwig, 3rd Prince of Hohenlohe-Langenburg was the third Prince of Hohenlohe-Langenburg. He was the first child of Prince Christian Albert of Hohenlohe-Langenburg and his wife, Princess Caroline of Stolberg-Gedern.

Hohenlohe-Langenburg was a German county and later principality in the Holy Roman Empire. It was located around Langenburg in what is now northeastern Baden-Württemberg, Germany. Starting in medieval times and continuing until 1806, this small state was ruled by a branch of the House of Hohenlohe, first as lords, then as counts and ultimately as ruling princes of the Holy Roman Empire after 1764. The princely House of Hohenlohe-Langenburg still owns and lives in Langenburg Castle today.