The MF 01 (French: Métro Fer appel d'offres de 2001; English: Steel-wheeled metro ordered in 2001; also called MF 2000 from its year of its invitation to tender) is a model of steel-wheeled electrical multiple units used on Paris's Metro system.

With many of the MF 67 trains approaching 35 years old on Lines 2, 5, and 9, the RATP determined that a new class of steel-wheel rolling stock was needed.

This process delayed the delivery by a year due to poor collaboration between the four companies, but the RATP has seen a drop in costs.

The MF 01 is the first rolling stock type on the Paris Metro to feature a refrigerated ventilation system inside the driver's cabs and passenger interiors, specially designed for the Metro's restricted loading gauge, which consumes less electricity than traditional air-conditioning.

Additionally, the MF 2000 consumes 30% less energy than its older counterparts due to innovations in traction and braking systems.

Although all of the MF 01 trains are configured in a way so that the system can easily be installed, high cost has delayed implementation to all trainsets.