Theodor Kullak (September 12, 1818 - March 1, 1882) was a German pianist, composer, and teacher. Kullak was born in Krotoschin (Krotoszyn) in the Grand Duchy of Posen. He began his piano studies as a pupil of Albrecht Agthe in Posen (Poznań). He progressed sufficiently to excite the interest of the artistic Prince Anton Radziwill in his eighth year. This early ability to attract noble patronage was an art he continued to deploy to advantage for many years to come. In 1829 the prince used his influence to secure a Berlin court concert.