Baron Miklós Wesselényi de Hadad (Hungarian pronunciation: ['miklo?? 'v???le??i]; archaically English: Nicholas Wesselényi; December 20, 1796 – April 21, 1850), was a Hungarian statesman, leader of the upper house of the Diet, member of the Board of Academy of Sciences, hero of the 1838 Pest flood.
A prominent and wealthy Hungarian aristocrat, son of Baron Miklós Wesselényi and Ilona Cserei, he was born at Zsibó (now Jibou), and was educated at his father's castle by Mózes Pataky in the most liberal and patriotic direction.
He inherited his father's exceptional physical strength, and he further trained himself in different sports, such as horse-riding and swimming.
He was a celebrity in his age for his sportsman's accomplishments.