Ferme des mille vaches, Industrial dairy farm in Buigny-Saint-Maclou, France.

The Ferme des Mille Vaches is an industrial dairy farm in the Picardie region that operates large-scale cattle housing facilities. The operation focuses entirely on milk production using mechanized feeding systems and automated herd management throughout the facility.

Dairy producers from the Vimeu and Ponthieu regions launched the project in 2009, led by Michel Ramery, a retired public works entrepreneur and farmer's son. The first administrative request was filed in February 2011, and the first milking took place on 13 September 2014 with 150 cows. Authorised for 500 cows, the farm held 794 in 2015; milk production ceased in January 2021.

Opposition crystallised in the association Novissen, founded in November 2011 by residents of the surrounding villages, which fought the project in court and on the ground. On 12 September 2013 and again on 28 May 2014, farmers of the Confédération paysanne entered the site, the second time dismantling the milking machine; five were taken into custody. Nine were convicted in October 2014, then had their prison sentences quashed on appeal in September 2015.

The farm stands on flat ground between Buigny-Saint-Maclou and Drucat, about 600 metres from the nearest houses and beside the Abbeville aerodrome. The site is private and dairy activity ended in 2021, so there is no visitor reception; the long main building and the four parallel covered enclosures are seen from the surrounding roads and fields.

A biogas system on the farm converts animal waste into electricity that powers thousands of homes in the surrounding region. This energy recovery approach is a key part of the operation's infrastructure.