Operation B (Czech: Akce B) is a 1952 Czech war drama film directed by Josef Mach and starring Antonie Hegerlíková, Vlasta Chramostová and Josef Bek.

[1] It was shot at the Barrandov Studios in Prague.

The film's sets were designed by the art director Miroslav Pelc.

It is set during Operation B, a military operation conducted by the Czechoslovak Army against the Ukrainian Insurgent Army in the aftermath of the Second World War.

This article related to a Czech film of the 1950s is a stub.