Joseph Wenzel I (Joseph Wenzel Karl; 9 August 1696 – 10 February 1772) was the Prince of Liechtenstein between 1712 and 1718, 1732 and 1745, and 1748 and 1772. Born at Prague, Joseph Wenzel was the eldest son of Prince Philip Erasmus of Liechtenstein (11 September 1664 – 13 January 1704) and Countess Christina Theresa von Löwenstein-Wertheim-Rochefort (12 October 1665 – 14 April 1730). He was a nephew of Anton Florian. From 1735 to 1736, he was Imperial Envoy to Berlin and he was Ambassador to Paris between 1738 to 1741. In 1760, he escorted the future bride of Josef II to Vienna.