Fontenay-aux-Roses (French pronunciation: [fɔ̃tnɛ o ʁoz] ⓘ) is a commune in the southwestern suburbs of Paris, France.

In 1880, a girls school École Normale Supérieure was opened in the town.

Fontenay is the location of the Commissariat à l'énergie atomique, and former location of the first French nuclear reactor, Zoé, and the first French tokamak fusion experiment, TFR.

Temperatures are mild; the coldest month is January with an average temperature of 4.7° C and the hottest months are July and August with a mean temperature of 20° C. Severe weather conditions are sometimes recorded: Fontenay-aux-Roses is served by Fontenay-aux-Roses station on Paris RER line B and Tram line 6 from Chatillon Montrouge metro to Viroflay.

[7] Lycée professionnel privé Saint François d'Assise, a private vocational high school, is in the commune.