Jan Václav Antonín Stamic (later, during his life in Mannheim, Germanized as Johann Wenzel Anton Stamitz; 18 June 1717, Deutschbrod, Bohemia – 27 March 1757, Mannheim, Electorate of the Palatinate) was a Czech composer and violinist. His two surviving sons, Carl and Anton Stamitz, were scarcely less important composers of the Mannheim school, of which Johann is considered the founding father. His music is stylistically transitional between Baroque and Classical periods.