Il prefetto di ferro (internationally released as I Am the Law and The Iron Prefect) is a 1977 Italian drama film directed by Pasquale Squitieri.

Aided by police officer Francesco Spanò, he visits the house of mafia boss Antonio Capecelatro, and shoots him dead with a headshot on his balcony.

He later organizes the siege of the town of Gangi, which culminates with the arrest and suicide of Don Calogero Albanese, fugitive for more than 40 years.

Through the will left by an old man living in the poorhouse, he becomes acquainted with the lawyer Galli, chief hierarch of the Sicilian Fascists and the Minister of the Interior.

The film was released on Blu-ray under the English title The Iron Prefect by UK distributor Radiance in July 2023.