Charles Thomas, 3rd Prince of Löwenstein-Wertheim-Rochefort (7 March 1714 – 6 June 1789) was from 1735 to 1789 the third Prince of Löwenstein-Wertheim-Rochefort.

Charles Thomas was the eldest son and second children of Dominic Marquard, 2nd Prince of Löwenstein-Wertheim-Rochefort (1690–1735) and his wife Christine Franziska Polyxena (1688-1728) a daughter of Charles, Landgrave of Hesse-Wanfried by his second wife Countess Juliane Alexandrine of Leiningen-Dagsburg.

On 7 July 1736 in Vienna he married Princess Maria Charlotte of Holstein-Wiesenburg (1718–1765). Their only child and daughter Leopoldine (1739 - 1765) married in 1761 her cousin, Charles Albert II, Prince of Hohenlohe-Waldenburg-Schillingsfürst (1742-1796). After the death of his first wife, he married morganatically on 4 February 1770 Maria Josepha von Stipplin (1735-1799). This marriage was without issue.

Charles Thomas studied in Prague and in Paris. From 1735 he was a corresponding member of the Académie française and during his life he hold a large library.

After more than fifty years as reigning prince and without legitimate male heirs, Charles Thomas was succeeded after his death by his nephew, Dominic Constantine (1762-1814), son of his youngest brother Prince Theodor Alexander of Löwenstein-Wertheim-Rochefort (1722-1780).

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