| Karl Ludwig | |
| Succession: | Prince of Hohenlohe-Langenburg |
| Reign: | 4 July 1789 – 4 April 1825 |
| Reign-Type: | Tenure |
| Predecessor: | Christian Albrecht |
| Successor: | Ernst I |
| Father: | Christian Albrecht, Prince of Hohenlohe-Langenburg |
| Mother: | Princess Caroline of Stolberg-Gedern |
| Spouse: | Countess Amalie Henriette of Solms-Baruth |
| Issue: | Princess Louise Elisabeth, Landgravine of Hesse-Rotenburg Cosntance, Princess of Hohenlohe-Schillingsfürst Emilie, Countess Friedrich Ludwig of Castell-Castell Ernst I, Prince of Hohenlohe-Langenburg Prince Frederick Princess Marie Henriette Louise, Princess Adolf of Hohenlohe-Ingelfingen Johanna, Countess Emil Christian of Erbach-Schönberg Agnes, Hereditary Princess of Löwenstein-Wertheim-Rosenberg Prince Henry Gustav Helene, Duchess Eugen of Württemberg Prince Henry |
| Birth Date: | 10 September 1762 |
| Birth Place: | Langenburg, Hohenlohe-Langenburg |
| Death Place: | Langenburg, Kingdom of Württemberg |
Karl Ludwig, 3rd Prince of Hohenlohe-Langenburg (10 September 1762 in Langenburg – 4 April 1825 in 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.
He was an avid musician. From 1815 to 1825, he held a seat in the Estates Assembly and since 1820 the First Chamber of the reorganized Estates, but after 1819, he let himself be represented by his son Ernst.
On 30 January 1789 at Kliczków Castle, he married Countess Amalie Henriette of Solms-Baruth (Kliczków, 30 January 1768 – Karlsruhe, 31 October 1847), the only child of Count Johann Christian II, Count of Solms-Baruth and his wife, Countess Friederike Louise of Reuss-Köstritz. The marriage produced the following thirteen children: