- Augusta, Richmond County, South Carolina, United States1
- Augusta-Richmond County (G.A.)1
- Ausable Chasm, Clinton County, New York, United States1
- Aust cliff, Aust, South Gloucestershire, England, United Kingdom1
- Austin (Tex.)1
- Austin, Texas, United States1
- Austin, Travis County, Texas, United States6
- Austinville, Wythe County, Virginia, United States2
- Australia25
- Australia [formerly known as New Holland]1
- Austria4
- Autrecourt-sur-Aire1
- Auvergne, France1
- Auvergne,France1
- Avondale2
- Awase Airfield (Japan)1
- Awendaw (S.C.)1
- Aynor (S.C.)7
- Babb's Mill, Greene County, Tennessee, United States1
- Bad Harzburg, Harz, Lower Saxony, Germany1