Here are 3 famous actors from Czechoslovakia died in 1975:
Zdenek Kryzanek (October 30, 1920 Jindřichův Hradec-December 24, 1975 Prague) also known as Zdeněk Kryzánek or Zdenek Kryzánek was a Czechoslovakian actor and author.
Stanislav Neumann (July 16, 1902 Prague-February 19, 1975 Prague) a.k.a. S. Neumann was a Czechoslovakian actor, teacher and voice actor. He had one child, Stanislav Neumann.
Béda Prazský (June 15, 1914 Prague-August 6, 1975 Prague) was a Czechoslovakian actor.