Texas - Area of significance: Commerce
| Old Hidalgo Courthouse and Buildings |
| Old Market House Museum |
| Old Penick-Hughes Company |
| Old Rock Saloon |
| Oliver-Eakle-Barfield Building |
| Paddock Viaduct |
| Palestine New Town Commercial Historic District |
| Pan-American Courts and Cafe |
| Panhandle Inn |
| Paris Commercial Historic District |
| Parker Lumber Company Complex |
| P. A. Smith Hotel |
| Paul Building |
| People's National Bank Building |
| Perry, Capt. William, House |
| Petroleum Building |
| Petroleum Building |
| Petroleum Building |
| Pickering House |
| Pilot Point Commercial Historic District |
| Pittsburg Commercial Historic District |
| Plainview Commercial Historic District |
| Plainview Hardware Company Building |
| Planters Bank Building |
| Poe Motor Company |
| Praetorian Building |
| Preslar-Hewitt Building |
| Purvin-Hexter Building |
| Quanah Commercial Historic District |
| Quitaque Railway Tunnel |
| Rackley, J. J., Building |
| Ragland, R. A., Building |
| Randall Building |
| Redlands Hotel |
| Reuss, J. M., House |
| Reuter, Louis and Mathilde, House |
| Rice Hotel |
| River Oaks Courts |
| Riverside Swinging Bridge |
| Roberts, Dr. Rufus A., House |
| Robinson Bank Building |
| Roma Historic District |
| Roma-San Pedro International Bridge |
| Roosevelt Hotel |
| Roper Hotel |
| Round Mountain Stage-Coach Inn and Stable |
| Round Rock Commercial Historic District |
| Round Rock Post Office and William M. Owen House |
| Saint Anthony Hotel |
| San Angelo National Bank Building |
| San Angelo National Bank, Johnson and Taylor, and Schwartz and Raas Buildings |
| San Antonio Downtown and River Walk Historic District |
| San Antonio Drug Company |
| San Antonio Loan and Trust Building |
| San Antonio Missions National Historical Park |
| San Elizario Historic District |
| Sanger Brothers Building |
| Sanger Brothers Building (1925) |
| Sanger Brothers Complex |
| San Jacinto Warehouse |
| Santa Fe Terminal Building No. 4 |
| Sayles Boulevard Historic District |
| Schlumberger Well Surveying Corporation Building |
| Schneider Hotel |
| Schneider, J. P., Store |
| Scott, L. A., House |
| Sears, Roebuck and Company Warehouse and Service Center |
| Seguin Commercial Historic District |
| Sengelmann Hall and City Meat Market Building |
| Settles Hotel |
| Shafter Historic Mining District |
| Shapira Hotel |
| Shary, John, Building |
| Shaw, M. W., Building |
| Sheeks-Robertson House |
| Simon Building |
| Sixth Street Historic District |
| Smith, Louis H., Inc. Firestone Store |
| Smithville Commercial Historic District |
| South Alamo Street-South Mary's Street Historic District |
| South Bridge Street Historic District |
| Southern Pacific Depot Historic District |
| South Texas National Bank |
| Specht’s Store and Schmidt’s Gin |
| Staacke Brothers Building |
| Star Drug Store |
| Star Engraving Company Building |
| Stephenville Downtown Historic District |
| Stevens Building |
| Stevenson, Joseph R. and Mary M., House |
| Stinson, John R., House |
| Strand Historic District, The |
| Straus House |
| Sturgis National Bank |
| Sweetwater Commercial Historic District |
| Swenson, William and Shirley, House |
| Tarlton Building |
| Taylor-Cooper House |
| Taylor Downtown Historic District |
| Temple Commercial Historic District |
Data from United States Park Service and Wikidata
