Aquitanian

Aquitanian may refer to:


 * Aquitanian (stage), a geological age, the first stage of the Miocene Epoch
 * Aquitanian language, an ancient language spoken in the region later known as Gascony
 * Aquitani (or Aquitanians), were a people living in what is now Nouvelle-Aquitaine and southwestern Midi-Pyrenees, France
 * Anything originating from Aquitaine, a region of France