Peter, Freiherr von Vécsey or Peter Vécsey de Hernádvécse et Hajnácskeo (Hungarian: hernádvécsei és hajnácskeoi gróf Vécsey Péter; 13 July 1768 – 21 July 1809) was an Imperial Austrian military commander of Hungarian descent who took part in the French Revolutionary Wars and Napoleonic Wars.
As a Freiherr (Baron), he was a member of the Austrian landless nobility.
He make his mark while leading cavalry units and advanced in rank to become a general officer in 1808.
He led an independent brigade during part of the 1809 campaign, and was mortally wounded while leading his troops in battle.