Jiří Grossmann (20 July 1941 – 5 December 1971) was a Czechoslovak theatre actor, poet, and composer.

After his graduation, he started at the technical university ČVUT, but left in 1962 when he met Miloslav Šimek in the Olympik bar.

Grossmann performed with Dixie Party Band in the Olympik bar, playing on contrabass also.

[1] Grossmann and Šimek's most famous project was Navštěvní dny, a theatre-styled show performed in theatre Semafor.

When Grossmann realized he was dying of Hodgkin's lymphoma, he wrote one of his most sad lyrics called "Závidím (I Am Envious)"[2] expressing fears of death.