All - Constructed - 1930–1939
| Randolph, Virginia, Cottage |
| Reber Radio Telescope |
| Redbone Community House |
| Red Cedar Inn |
| Redfeather Ranger Station |
| Redick Tower |
| Red Mountain Shelter |
| Redwood Lodge |
| Redwood Meadow Ranger Station |
| Regency Suspension Bridge |
| Republic County Courthouse |
| Reservoir Avenue Sewage Pumping Station |
| Residential Area District |
| Reynolds Arcade |
| Rice Apartments |
| Richmond National Battlefield Park |
| Rich-Schwartz Building |
| Ricker Pond State Park |
| Riggs Spring Fire Trail |
| Riley Creek Ranger Cabin No. 20 |
| Rio Grande Bridge at Radium Springs |
| Rio Grande Southern Railroad, Motor No. 6 |
| Ririe Community Hall |
| Rito Seco Creek Culvert |
| Riverside Park Bandshell |
| Riviera Hotel |
| Riviera, The |
| Roaring River State Park Hotel |
| Rockaway Courthouse |
| Rock House-Custodian's Residence |
| Rock Rift Fire Observation Tower |
| Rockwood Lodge Barn and Pigsty |
| Rocky Butte Scenic Drive Historic District |
| Rocky Neck Pavilion |
| Roes Creek Campground Camptender's Cabin |
| Rogers, John R., High School |
| Rogers Theater |
| Rogue River Bridge No. 01172 |
| Rollinsford Grade School |
| Roosevelt County Courthouse |
| Roosevelt Elementary School |
| Roosevelt Hospital |
| Roosevelt School |
| Roosevelt School |
| Roosevelt, Theodore, Senior High School |
| Rose City Golf Clubhouse |
| Rosenburg's Department Store |
| Ruleville Depot |
| Russell House |
| Russell Lodge No. 284 |
| Russellville Public Library |
| RyeMabee |
| Sacajawea State Park |
| Saint Anthony's Church and Rectory |
| Saint Edward Seminary |
| Saint Matthew Parish |
| Salt River Hydroelectric Powerplant |
| San Antonio US Post Office and Courthouse |
| Sand Bar State Park |
| Sandford Hall |
| San Diego Civic Center |
| San Diego State College |
| San Francisco-Oakland Bay Bridge |
| San Juan River Bridge at Shiprock |
| San Mateo County Courthouse |
| San Patricio de Hibernia Monument |
| Sanpete County Courthouse |
| Santa Fe Depot |
| Santa Fe Depot |
| Saratoga National Historical Park |
| Savanna-Sabula Bridge |
| Sayre Champlin Service Station |
| Scalplock Mountain Fire Lookout |
| Schaller Memorial Building |
| Schenectady Armory |
| Schenectady City Hall and Post Office |
| Scholes Hall |
| School Building Number 2 |
| Scipio Town Hall |
| Seaboard Air Line Railway Depot |
| Sea Cliff Firehouse |
| Seashore State Park Historic District |
| Seattle Art Museum |
| Sedgwick Gardens |
| Sensenbrenner, J. Leslie, House |
| Settles Hotel |
| Sewanee Fire Lookout Tower |
| Shadow Mountain Lookout |
| Shadow Mountain Trail |
| Shady Bend Gas Station, Grocery, and Diner |
| Shady Point School |
| Shalit, Samuel, House |
| Shawano Post Office |
| Shawnee Street Overpass |
| Sheboygan County Courthouse |
| Shedd, John G., Aquarium |
| "Shell Oil Company ""Spectacular"" Sign" |
| Sherrill, John Carlyle and Anita, House |
| Shove Memorial Chapel |
| Shriner Peak Fire Lookout |
Data from United States Park Service and Wikidata
