Young Spectator's Theatre (Театр Юного Зрителя, ТЮЗ) was a standard name of a theatre for children and youth in many cities of the Soviet Union, usually referred to by this abbreviation: тюз, TYuZ (sometimes translated as "TUZ theatre"). The oldest children's theatre under such a name was Moscow TYuZ (Московский театр юного зрителя), created in 1918 and Bryantsev Youth Theatre in Saint Petersburg, opened in 1922.
A TYuZ was typically a stationary theatre, with a dedicated building that housed several scenes, including a puppet theatre.
While considered by many actors to be less prestigious than "adult" theatres, such theatres served well as entertainment for youth not yet sophisticated enough for more mature theatre.