Collection place
- Redwood Valley, Mendocino County, California4
- Reedley, Fresno County, California8
- Reese #101, Nye County, Nevada4
- Region of Site Ocr2-24, Carchi Province, Ecuador9
- Region of Site Ocr2-27, Carchi Province, Ecuador10
- Región de Murcia, Spain10
- Reigate, Surrey, South East England3
- Reihōkan Museum, Mt. Koya, Wakayama Prefecture1
- Rekwoi (historic village), Del Norte County, California13
- Relogio, Amapá State, Brazil1
- Rench Site, Illinois4
- Renegade Canyon, Inyo County, California1
- Renmark, South Australia1
- Reno, Washoe County, Nevada27
- Repartição, Rio Andirá, Brazil1
- Republic of Benin47
- Republic of Botswana117
- Republic of South Africa2,127
- Republic of Transkei (historical)25
- Republic of Venice (697-1797)1