Place
- Accra (Ghana)7
- Addis Ababa (Ethiopia)7
- Afghanistan1
- Africa63
- Africa, North1
- Africa, Southern17
- Africa, West1
- Ahvāz (Iran)7
- Akashi-shi (Japan)7
- Alabama23
- Alameda County (Calif.)21
- Alaska29
- Albemarle Sound (N.C.)1
- Albion River Watershed (Calif.)1
- Alexandria (Egypt)7
- Algiers (Algeria)7
- Anqing Shi (China)7
- Ansan-si (Kyŏnggi-do, Korea)7
- Arabian Peninsula1
- Arctic Ocean2