Place
- Accra (Ghana)5
- Addis Ababa (Ethiopia)5
- Africa2
- Ahvāz (Iran)4
- Akashi-shi (Japan)5
- Alabama14
- Alameda County (Calif.)9
- Alaska11
- Albemarle Sound (N.C.)4
- Albion River Watershed (Calif.)11
- Alexandria (Egypt)6
- Algeria1
- Algiers (Algeria)6
- Alsip, Illinois1
- Amador County (Calif.)1
- American Samoa4
- Anqing Shi (China)5
- Ansan-si (Kyŏnggi-do, Korea)5
- Antarctic Ocean2
- Antarctica1