Savenay (French pronunciation: [sav(ə)nɛ] ⓘ; Savenneg in Breton) is a town (administratively a commune) in the Loire-Atlantique department in western France which is part of the Pays de la Loire region.

It is located on the Sillon de Bretagne (a mountain range defining the southern part of Brittany) and overlooks the marshes of the Loire river, seven kilometers to its south.

The presence of the Sillon de Bretagne, however, causes some local variations in the climate, with marsh areas generally colder than the rest of the town.

As part of the hospital's infrastructure, a local stream was dammed creating the Mabille Valley Lake.

Many other sports are available, such as cycling, football, basketball, weightlifting, handball, judo, karate, aikido, badminton, horseback riding, hiking, mountain biking, paintball, etc..