- 3 Rochus, Saint, ca. 1350-ca. 1380
- 1 Rock Carpet Mills
- 1 Rock climbing
- 2 Rockefeller, John Davison, Jr., 1874–1960
- 3 Rockets
- 10 Rocking chairs
- 1 Rocking horses
- 1 Rockingham Castle, England
- 2 Rockingham, England
- 3 Rockland Street
- 25 Rocks
- 1 Rockville, Maryland
- 1 Rocky Hill, Pennsylvania
- 5 Rocky Mountain Museum
- 7 Rocky Mountains
- 1 Rocky Run, Pennsylvania
- 1 Rocky Run, Pennsylvania
- 1 Rodger's Printing House
- 1 Rodman Street
- 1 Rodwell, G. Herbert (George Herbert), 1800-1852
- 2 Rogers Upright Piano Co.
- 1 Rogers, Fairman, 1833-1900
- 1 Rogers, Margaret
- 1 Rogers, Molly
- 1 Rogers, Randolph, 1825-1892.
- 2 Rogers, Samuel, 1763-1855
- 2 Roissman Stables
- 1 Roldán, Amadeo, 1900-1939
- 1 Rolland, William Rae (1817-1904)
- 1 Roller coasters
- 4 Roller conveyors
- 1 Roller skates
- 3 Rollers (Printing)
- 1 Rolleston, T. W. (Thomas William), 1857-1920
- 5 Rolling mills
- 1 Rolling pins
- 4 Roman Catholicism
- 23 Romances
- 1 Romanelli, Pasquale
- 1 Romanesque
