César Cui Sheet Music
- Born: 18th January 1835
- Died: 13th March 1918
- Birthplace: Vilnius, Russian Empire (Now Lithuania)
César Antonovich Cui was a Russian composer and music critic of French and Lithuanian descent. His profession was as an army officer and a teacher of fortifications, and his avocational life has particular significance in the history of music. In this sideline he is known as a member of The Five, a group of Russian composers under the leadership of Mily Balakirev dedicated to the production of a specifically Russian type of music.