All - Architectural style - Romanesque Revival architecture
| Prince William County Courthouse |
| Probasco, Henry, House |
| Prospect Congregational Church |
| Pruyn, Joel M., Block |
| P.S. 186 |
| Public Bath House No. 2 |
| Public Baths |
| Public School 108 |
| Public School 11 |
| Public School 35 |
| Public School 65K |
| Public School 66 |
| Public School No. 111 |
| Public School No. 25 |
| Public School No. 99 |
| Puck Building |
| Pulaski County Courthouse |
| Pulaski County Courthouse |
| Pulaski County Courthouse |
| Pulaski County Courthouse |
| Putnam County Courthouse |
| Pythian Castle |
| Pythian Castle |
| Quanah Commercial Historic District |
| Quasdorf Blacksmith and Wagon Shop |
| Quincy Building |
| Quincy, Omaha and Kansas City Railroad Office Building |
| Quinn Chapel of the A.M.E. Church |
| Quinnipiac Brewery |
| Quinsigamond Firehouse |
| Railway Chapel, The |
| Ramona Town Hall |
| Rangley Public Library |
| Raritan Station |
| Ray, William H., House |
| Reading Municipal Light and Power Station |
| Redfield Carnegie Library |
| Redstone |
| Red Wing Waterworks |
| Reedsburg Brewery |
| Rees, Harriet F., House |
| Regina Coeli Monastery |
| Reinbolt Hall at St. Mary's University |
| Review Building |
| Rexburg Stake Tabernacle |
| Reymer Brothers Candy Factory |
| "Reynolds, Joseph ""Diamond Jo,"" Office Building and House" |
| Rhodes-Haverty Building |
| Rhodes Memorial Hall |
| Richardson, John D., Dry Goods Company |
| Richmond Memorial Library |
| Riddle Block |
| Ridgway Armory |
| Riggs National Bank, Washington Loan And Trust Company Branch |
| Rindge, Frederick Hastings, House |
| Ritchie Grocery Building |
| Roberts, John N., House |
| Roberts Park Methodist Episcopal Church |
| Robinson Bank Building |
| Roche, Martin-John Tait House |
| Rock County Courthouse and Jail |
| Rockinghan County Courthouse |
| Rock Island Depot |
| Rockland Public Library |
| Rollins, John R., School |
| Rose, Adolph, Building |
| Rose, Robert H., House |
| Roslindale Congregational Church |
| Roth, Lottie, Block |
| Roughan Hall |
| Rouses Point Railroad Station |
| Rowena Memorial School |
| Royal Brewery |
| Ruhstaller Building |
| Rumford Public Library |
| Rush County Courthouse |
| Rush County Courthouse |
| Rush-Miller House |
| Russell County Jail and Sheriff's Residence |
| Russell, The |
| Sac County Courthouse |
| Sacred Heart Catholic Church |
| Sacred Heart Church |
| Sacred Heart Church |
| Sacred Heart Church |
| Sacred Heart Orphanage |
| Saint Ann's Episcopal Church |
| Saint Anthony's Catholic Church |
| Saint Benedict Joseph Labre Parish |
| Saint John's Roman Catholic Church |
| Saint Joseph 1930 Hospital |
| Saint Joseph's Roman Catholic College for Boys |
| Saint Mary of Mount Virgin Roman Catholic Church |
| Saint Mary's Parish |
| Saint Paul's Episcopal Church |
| Saints Cyril and Methodius Catholic Church and Rectory |
| Saints Peter And Paul Church |
| Salem Methodist Episcopal Church |
| Saline First Presbyterian Church |
| Sand Beach Church |
Data from United States Park Service and Wikidata
