Franz Wenzel, Graf von Kaunitz-Rietberg (2 July 1742 in Vienna – 19 December 1825 in Vienna) was an Austrian general who saw service in the Seven Years' War and Wars of the French Revolution.
Kaunitz was the third son of the statesman Wenzel Anton von Kaunitz-Rietberg and his wife, Mary Ernestine (née Countess Starhemberg). He remained unmarried.
At the beginning of the Wars of the French Revolution, he was made Feldzeugmeister (FZM) in the Austrian Netherlands under Prince Josias of Saxe-Coburg-Saalfeld and served in the Flanders Campaign. Commanding Coburg's 27,000 man left wing, Kaunitz distinguished himself defending the line of the River Sambre in 1794, beating off Jacques Desjardin and Louis Charbonnier at the Battle of Grandreng on 13 May before completely routing the French at the Battle of Erquelinnes on 24 May. However, he resigned on 30 May after the Prince of Orange was appointed over his head for political reasons. Kaunitz commanded a column at the Battle of Fleurus on 26 June.
In 1796, he was made commanding general in Galicia and in 1805 in Moravia. The following year, he resigned from active service.
Kaunitz was a member of the Masonic Lodge in Brno.