Mata Hari, Agent H21 (Italian:Mata-Hari, agente segreto H21) is a 1964 French-Italian spy film directed by Jean-Louis Richard and starring Jeanne Moreau, Jean-Louis Trintignant and Claude Rich.

In Paris during the First World War, an exotic dancer called Mata Hari moves in the best circles and has affairs with influential men.

At a party she lures Captain François Lasalle, a French army officer, back to her apartment.

After achieving this, with the help of her chauffeur Julien who is also in the pay of the Germans, she escapes into neutral Spain.

When German agents succeed in blowing up the depot, Greitje is offered a ticket to anywhere in the world.