Welcome, or No Trespassing (Russian: Добро пожаловать, или Посторонним вход воспрещён, romanized: Dobro pozhalovat, ili Postoronnim vkhod vospreshchyon) is a 1964 Soviet satirical comedy film directed by Elem Klimov about the excessive restrictions that children face during their vacation in a Young Pioneer camp, imposed by their masters.

[1] In a Soviet Young Pioneer camp, Dynin, the administrator is afraid that the children may succumb to harmful accidents and that he will be deemed responsible.

Inochkin is afraid that if his grandmother, with whom he lives, discovers that he has been expelled, she will die from sorrow, so instead of going home he returns to camp illegally.

The film's final scenes show the joy of freedom without Dynin's restrictions, kids and adults swim and even unrealistically jump over the river (although this is presumably a fantasy).

[2] In a 2006 review for Slant magazine, Keith Uhlich gave Welcome, or No Trespassing a score of 3 1/2 out of 5 stars, writing that the film "carries within its deceptive ingenuousness an acute, potentially revolutionary political charge" and lamenting it "bears the scars of this ambiguous time, its profound sense of aesthetic liberation often having the adverse effect of dulling its satirical blade".

[3] Will Noah of the Criterion Current called it a "gleefully inventive summer-camp farce barbed with allegory" and in comparison to Klimov's subsequent film Adventures of a Dentist (1965), wrote: "Welcome, or No Trespassing is lighter on its feet, skipping more quickly between shots to achieve its zippy kid-comedy rhythms".

[4] Welcome, or No Trespassing has been pointed out as one major source of inspiration for American director Wes Anderson, specifically its “camera work, storytelling devices, and charming whimsy.”[5]