- 2 Rittenhouse Street
- 2 Rittenhouse Town, Pennsylvania
- 1 Rittenhousetown Lane
- 1 Rituals (events)
- 7 Ritz-Carlton Hotel
- 7 River ports
- 7 Riverbanks
- 1 Riverboats
- 3 Riverfronts
- 236 Rivers
- 1 Riverside Geyser, Yellowstone National Park
- 1 Riverside Glue Works-Baeder, Adamson
- 1 Riverside, Delaware
- 1 Riverton, New Jersey
- 1 Riveting
- 2 Rivets
- 11 Rizzo, Frank
- 8 Road construction
- 1 Road Hill House Murder
- 1 Road maps
- 64 Roads
- 1 Roadsides
- 1 Roadsters
- 2 Roanoke, Virginia
- 12 Robberies
- 3 Robert Froc & Son
- 1 Robert Gysae (Firm)
- 1 Robert Hare Powell & Co.
- 1 Robert Morris Hotel
- 11 Robert Newell & Sons (Firm)
- 1 Robert Steel, Importer of Wines, Liquors, and Cigars
- 1 Robert Stewart, Tailor
- 1 Robert Wetherill & Co.
- 1 Robert-Houdin, Jean-Eugene, 1805-1871
- 2 Roberton, John
- 1 Roberts' Cotton Factory
- 1 Roberts' Dye Works
- 1 Roberts' Hotel
- 4 Roberts' Mill
- 1 Roberts, A.&P. Iron Works
