Louis V, Count of Rieneck

Louis V, Count of Rieneck-Rothenfels (c. 1256 – 3 July 1333), was a son of Count Louis III of Rieneck and Udelhilt of Grumbach. In 1296 he signed an inheritance treaty with his brother-in-law Ulrich I of Hanau. Under Louis the county was partitioned: he kept Lauda, Partenstein and Gemünden, while his cousins received Lohr and Grünsfeld.

In 1329 he made his daughter Udelhilt sole heiress. When he died on 3 July 1333 without an adult son, Mainz and Würzburg rejected her claim and the county of Rieneck lost much of its land.