Ján Kupecký or Jan Kupecký (in German: Johann Kupetzky, in Hungarian: Kupecky János, or Kupeczky János, 1667 – July 16, 1740) was a Czech and Slovak portrait painter during the baroque.
He was active in Hungary, Slovakia, Vienna and Nürnberg.
Bernhard Vogel produced many engravings after Kupecký's paintings.