- AZ-Cornfields-NL-14 (Ruin A), Cornfields District, Apache County1 objects
- AZ-Silver Cr-NL-10 (Three mile ruin No. 1), Navajo County, Arizona1 objects
- Abydos region, Upper Egypt27 objects
- Adrar region, Mauritania1 objects
- Africa46 objects
- Alameda County, California47 objects
- Aldama Municipality, Chihuahua, Mexico4 objects
- Ancon Site T, Ancon district, Lima Region1 objects
- Ancón DIstrict, Lima Region, Central Peru1 objects
- Angwin area, Napa County, California1 objects
- Anian Island, British Columbia, Canada3 objects
- Apache County, Arizona1 objects
- Apatzingán (city), Apatzingán municipality, Michoacán3 objects
- Apatzingán municipality, Michoacán, Mexico3 objects
- Apple Valley, San Bernardino County, California1 objects
- Arabian Peninsula7 objects
- Arizona35 objects
- Asia13 objects
- Ba Province, Western (Lautoka) Division, Fiji1 objects
- Baja California Sur, Mexico1 objects