Jan Dismas Zelenka, Czech viol player and composer (d. 1745)
Jan Dismas Zelenka (16 October 1679 – 23 December 1745), baptised Jan Lukáš Zelenka and also known as Johann Dismas Zelenka or Johannes Lucas Ignatius Dismas Zelenka, was a composer and musician of the Baroque period. His music is admired for its harmonic inventiveness and counterpoint.

Zelenka was raised in Central Bohemia, educated in Prague and Vienna, and spent his professional life in Dresden. The greatest success during his career was the performance of the extensive composition Sub olea pacis et palma virtutis in the presence of the Emperor Charles VI, shortly after his coronation as king of Bohemia in 1723.