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

This disambiguation page lists articles associated with the title Aquitanian.
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