Jean-Michel Beysser (4 November 1753, in Ribeauvillé – 13 April 1794, in Paris) was a French general.

Thanks to the French Revolutionary Wars he rose rapidly through the officer ranks: In this last post he repulsed the Vendéens at the end of June 1793.

Already suspecting him, the government arrested him and on 2 October 1793 imprisoned him in the Prison de l'Abbaye.

He appeared before the Revolutionary Tribunal of Paris and was condemned to death by it on 24 March 1794 (4 germinal year II), as an accomplice of Jacques-René Hébert, Charles-Philippe Ronsin, François-Nicolas Vincent, Mazuel, Antoine-François Momoro (all already condemned) in trying to dissolve the national representative assembly and put a tyrant in place over the state.

He was guillotined at the same time as Arthur de Dillon, Pierre Gaspard Chaumette, Jean-Baptiste Gobel, Lucile Desmoulins and Marie Marguerite Françoise Hébert on 13 April 1794 (24 germinal an II).