Colleferro (IPA: /kɔllefɛrro/) is a small town with 20 698 inhabitants of the Metropolitan City of Rome in the Lazio region of central Italy.

Appian and Plutarch describe a decisive battle in the Civil War against Gaius Marius the Younger, which took place in 82 BC at Colleferro, concluded in favor of Sulla.

During World War II, the Allies repeatedly bombarded Colleferro to destroy the explosives factory.

During the attacks, citizens found shelter in a series of caves and tunnels built under the "BPD Village".

On 9 October 2007 one person was killed and eight were injured in an explosion at a weapons factory belonging to Italian company Simmel Difesa.

As for the 'livestock, the environmental crisis had forced the slaughter of livestock and destruction of health protection for milk in all farms in the area.

The development of Colleferro is linked from the beginning to its industrial, with the opening of explosives Bombrini Parodi Delfino (BDP), to which were added numerous chemical plants and textile.