Pennsylvania - Area of significance: Industry
| Coopersburg Historic District |
| Coplay Cement Company Kilns |
| Cornwall Iron Furnace |
| Corry Historic District |
| Coulsontown Cottages Historic District |
| Coventry Hall |
| Coventryville Historic District |
| Crook Farm |
| Crosley-Garrett Mill Workers' Housing, Store and Mill Site |
| Crown Can Company Building |
| Curtin Village |
| Curtis and Jones Company Shoe Factory |
| Cuttalossa Valley Historic District |
| Dale, Felix, Stone House |
| Dale Furnace and Forge Historic District |
| Danville Historic District |
| Davis Island Lock and Dam Site |
| Dawson Historic District |
| Deisher, H. K., Knitting Mill |
| Delaware, Lackawanna and Western Railroad Yard-Dickson Manufacturing Co. Site |
| Delbar Products, Inc. |
| Delta Historic District |
| Dennis Farm |
| Dent Hardware Company Factory Complex |
| Diamond Silk Mill |
| Dickson Works |
| Dobson Mills |
| Doe Run Village Historic District |
| Donegal Mills Plantation |
| Dorflinger, Eugene, Estate |
| Drake Oil Well |
| Dreibelbis Mill |
| Drueding Brothers Company Building |
| Duquesne Brewing Company |
| Durham Mill and Furnace |
| E.A. Wright Bank Note Company Building |
| Eberhardt and Ober Brewery |
| Eby Shoe Corporation |
| Eckley Historic District |
| Economy Historic District |
| Edward Corner Marine Merchandise Warehouse |
| Eisenlohr-Bayuk Tobacco Historic District |
| Eliza Furnace |
| Embreeville Historic District |
| Emig Mansion |
| Emlenton Historic District |
| Equinunk Historic District |
| Etna Furnace |
| Evansburg Historic District |
| Fairmount Avenue Historic District |
| Farmar Mill |
| Farrandsville Iron Furnace |
| Fenner-Snyder Mill |
| Fetter's Mill |
| Fetter's Mill Village Historic District |
| Follmer, Clogg and Company Umbrella Factory |
| Fonthill, Mercer Museum and Moravian Pottery and Tile Works |
| Ford Motor Company Assembly Plant |
| Fountain Hill Historic District |
| Franklin Carpet Mill |
| Franklin Furnace Historic District |
| Franklin Historic District |
| Franklin Institute |
| Frey, Jacob L., Tobacco Warehouse |
| Friedman, Henry B., Tobacco Warehouse |
| Gamble Mill |
| Geiger Mill |
| General Electric Switchgear Plant |
| General Stores and Mold Loft Building-Harriman Yard of the Merchant Shipbuilding Corporation |
| Glassworks-Core House |
| Glassworks-Gabler House |
| Glen Foerd at Torresdale |
| Glen Rock Historic District |
| Globe Knitting Mills |
| Goldsboro Historic District |
| Gordon, Jervis, Grist Mill Historic District |
| Gotham Silk Hosiery Company |
| Graham and Laird, Schober and Mitchell Factories |
| Grant, O.B., House |
| Great Valley Mill |
| Greensboro Historic District |
| Green Valley Historic District |
| Greenwood Furnace |
| Griesemer-Brown Mill Complex |
| Grimshaw Silk Mill |
| Grubb, Conrad, Homestead |
| Gruber Wagon Works |
| Grundy Mill Complex |
| Guldin Mill |
| Haines Mill |
| Hain Mill |
| Hanover Historic District |
| Harbison-Walker Refractories Company |
| Harmony Forge Mansion |
| Harriman Historic District |
| Harrington Machine Shop |
| Harris Building |
| Harrisburg Avenue Tobacco Historic District |
| Hartley-Rose Belting Company Building |
| Hatfield-Hibernia Historic District |
Data from United States Park Service and Wikidata
