Hieronymus Weickmann was an Imperial Russian viola player, composer and music educator of German descent. Weickmann worked in Saint Petersburg, Russia from 1853 to 1891. He played in the Mariinsky Theatre Orchestra from 1855 to 1890. Along with Leopold Auer, Johann Wilhelm Zacharias Pickel and Karl Davydov, and later Aleksandr Verzhbilovich, he was a member of the quartet of the Russian Musical Society in Saint Petersburg from 1859–1889.