Coordinates: 48°56′00″N 2°18′00″E / 48.9333°N 2.3000°E / 48.9333; 2.3000

Gennevilliers (French pronunciation: [ʒənvilje]) is a commune in the northwestern suburbs of Paris, France. It is located 9.1 km (5.7 mi) from the center of Paris.

On 9 April 1929, one-fifth of the territory of Gennevilliers was detached and became the commune of Villeneuve-la-Garenne.

Gennevilliers is the site of the main river port of Paris on the Seine river.

Gennevilliers is served by three stations on Paris Métro line 13: Les Courtilles, Les Agnettes and Gabriel Péri. All three are at the border with the commune of Asnières-sur-Seine.

Gennevilliers is also served by two stations on Paris RER line C: Les Grésillons and Gennevilliers.

Gennevilliers was the birthplace of the actress Isabelle Adjani, and the French judoka Pascal Tayot, who won a silver medal at the 1992 Summer Olympics. It is also the birthplace of pole vault bronze medalist and former record holder Thierry Vigneron.

Gennevilliers is twinned with: