Mata Hari, agent H21
- Curs: 1964
- País: France, Italy
- Gènere: Drama, History, Romance, War
- Estudi: Fida Cinematografica, Filmel, Les Films du Carrosse, Simar Films
- Paraula clau: world war i, secret agent, based on true story, romance, femme fatale, execution, secret service, exotic dancer
- Director: Jean-Louis Richard
- Repartiment: Jeanne Moreau, Jean-Louis Trintignant, Claude Rich, Henri Garcin, Georges Riquier, Frank Villard