- 1 Ridge Avenue
- 1 Ridge Avenue
- 41 Ridge Avenue
- 2 Ridge Avenue Passenger Railway Depot
- 2 Ridgeway House
- 1 Ridgeway, Edward
- 3 Ridgway House
- 7 Riding (traveling)
- 14 Riding horses (animals)
- 2 Riding schools (buildings)
- 2 Ridley Creek, Pennsylvania
- 8 Ridley Township, Pennsylvania
- 1 Rie Avenue
- 2 Riehle Bros.
- 1 Rif (culture)
- 20 Rifles
- 11 Rifles (long guns)
- 1 Rigaud (Fictitious character)
- 1 Rigging
- 3 Rights
- 2 Rigors' Detective Agency
- 1 Riley, W.B. Horse Clothing Store & Factory
- 2 Ringgold Street
- 2 Ringing Rock, Pennsylvania
- 4 Rings (jewelry)
- 1 Rio de Janeiro, Brazil
- 12 Riots
- 1 Ripley Street
- 1 Rippingille, Edward Villiers, 1798?-1859
- 1 Risberg, Charles August (Swede), 1894–1975
- 14 Rising Sun Avenue
- 6 Rising Sun Hotel
- 1 Rising Sun Tavern
- 1 Risorgimento
- 1 Ritchie's Mill
- 2 Riter's Cash Store
- 1 Rites & ceremonies
- 14 Ritner Street
- 2 Rittenhouse Knitting Mills (T. Loveridge)
- 5 Rittenhouse Paper Mill
