Alfortville (French pronunciation: [alfɔʁvil] ^ⓘ) is a commune in the Val-de-Marne department in the southeastern suburbs of Paris, France. It is located 7.6 km (4.7 mi) from the center of Paris. It is one of the 13 communes in the intercommunality of Métropole du Grand Paris. It is also further divided into 15 neighborhoods.

In 1885, 40% of the territory of Maisons-Alfort was split off and became the commune of Alfortville.

The Hôtel de Ville was completed in 1887.

Alfortville is served by two stations on Paris RER D: Maisons-Alfort–Alfortville and Le Vert de Maisons.

Alfortville is located at only 500 meters from the metro station École Vétérinaire de Maisons-Alfort on Paris Métro Line 8.

The Armenian community of Alfortville is very significant. The Armenian Apostolic Church, located south of the city, is an important place for the Armenian community. There are streets named after Komitas Vartabed, Missak Manouchian, and the city of Yerevan. A roundabout has recently been named Place d'Achtarak after the Armenian city Ashtarak.

After military clashes in the Armenian-populated breakaway Nagorno-Karabakh region between Armenian and Azerbaijani troops resumed in 2020, the city council of Alfortville unanimously voted to support the recognition of its independence under its Armenian name of Artsakh Republic, making it the first French city to do so.

Public schools in the commune include: