- 2 Cowley, Olivia Cecilia, Countess, 1807?-1885
- 1 Cowper, William, Francis, Hon. 1811-1888
- 33 Cows
- 1 Cox, James Middleton, 1870–1957
- 1 Cox's Hotel
- 1 Coyle, Anna
- 1 Coyle, Grace
- 3 Crabs
- 5 Crackers
- 3 Cracks
- 8 Cradles
- 6 Craftsmen
- 1 Craig Cotton Factory
- 7 Cramp Shipyard
- 21 Cranes (birds)
- 47 Cranes (equipment)
- 1 Crans, W. H. Cohocksink Marble Yard
- 6 Crates
- 4 Craven & Dearnley (Worsted and yarn mill)
- 1 Craven, Dunill, & Co. Jackfield Works (England)
- 3 Crawford Street
- 2 Crayons (drawing material)
- 1 Cream pails
- 3 Crease's Chemical Works
- 5 Creation
- 3 Creches (Nativity scenes)
- 1 Credit
- 4 Creeds
- 156 Creeks
- 1 Creft's Mill
- 1 Crescentius, Saint, 4th cent.
- 2 Crescentville Mills
- 2 Crescentville Seminary
- 10 Crescentville, Pennsylvania
- 2 Cresheim Cotton Mills:
- 1 Cresheim Creek
- 2 Cresheim Road
- 3 Cresson Street
- 1 Cresson, John C. (John Chapman), 1806-1876
- 1 Cresswell Iron Foundry
