Iosif Iosifovich Kotek, also seen as Josef or Yosif (Russian: Иосиф Иосифович Котек, Iosif Iosifovič Kotek; 6 November [O.S. 25 October] 1855 – 4 January 1885), was a Russian Empire violinist and composer remembered for his association with Pyotr Ilyich Tchaikovsky. He assisted Tchaikovsky with technical issues in the writing of the solo part in his Violin Concerto in D. He was also probably his lover at some point, although he was not exclusively homosexual.
