W.R.: Mysteries of the Organism (Serbo-Croatian: W.R. – Misterije organizma / W.R. – Мистерије организма) is a 1971 film by Serbian director Dušan Makavejev that explores the relationship between communist politics and sexuality, as well as presenting the controversial life and work of Austrian-American psychoanalyst Wilhelm Reich (1897–1957).

Makavejev was subsequently indicted there on criminal charges of "derision" towards "the state, its agencies, and representatives" after he made intemperate remarks to a West German newspaper about the ban.

The woman, Milena, violates her proletarian convictions (and rejects the sexual advances of a worker) by pursuing a Joseph Stalin-like celebrity ice skater — Vladimir Ilyich (Lenin's first name and patronymic) — who represents both class oppression and corruption from the West into communist beliefs.

Poet and performance artist Tuli Kupferberg of the band The Fugs, dressed as a soldier, parodies war and the sexual nature of some peoples' fascination with guns by stalking affluent New Yorkers on the street and masturbating his toy rifle.

The soundtrack features another song by The Fugs, "I'm Gonna Kill Myself Over Your Dead Body", with Tuli Kupferberg satirically mimicking John Wayne in his a cappella vocals.

Jackie Curtis, a cross-dressing member of Andy Warhol's entourage and star in his films, is shown on the streets of New York enjoying an ice cream cone with a partner.

The film features a rare on-screen interview with neo-Reichian therapist Alexander Lowen, the founder of bioenergetic analysis, during a therapy session, including scream treatment.