Marie Luise Viktoria of of Saxe-Coburg-Saalfeld (August 17, 1786-March 16, 1861) was the daughter of Duke Francis Frederick of Saxe-Coburg-Saalfield (1750-1806) and Countess Auguste Reuss zu Ebersdorf und Lobenstein (1757-1831).
On the December 21, 1803 at Coburg, she married (as his second wife) Karl, Fürst zu Leiningen (1763-1814) whose first wife Henriette Reuss zu Ebersdorf was her mother's sister. They had two children:
- Carl Friedrich Wilhelm Emich (1804-1856)
- Feodora (1807-1872)
- Queen Victoria (1819-1901).