Indiana - Criteria: C (architecture/engineering)
| Recker, Carlos and Anne, House |
| Redkey Historic District |
| Reeves, Jabez, Farmstead |
| Reeves, Jane Ross, Octagon House |
| Reeveston Place Historic District |
| Reitz, John Augustus, House |
| Remington Water Tower and Town Hall |
| Rensselaer Carnegie Library |
| Rensselaer Courthouse Square Historic District |
| Reserve Loan Life Insurance Company |
| Reynolds, James Culbertson, House |
| Richland-Plummer Creek Covered Bridge |
| Richmond Downtown Historic District |
| Richmond High School |
| Richmond Railroad Station Historic District |
| Richsquare Friends Meetinghouse and Cemetery |
| Rickenbaugh House |
| Ridgeway, Marion, Polygonal Barn |
| Ridgway Building |
| Rink |
| Rink's Womens Apparel Store |
| Ripley County Courthouse |
| Rising Sun Historic District |
| Riverside Historic District |
| Riverside Historic District |
| River View Cemetery |
| Rivoli Theater |
| Roads Hotel |
| Roann Covered Bridge, 4th |
| Roann Historic District |
| Roann-Paw Paw Township Public Library |
| Roberts Hotel |
| Roberts-Morton House |
| Roberts Park |
| Roberts Park Methodist Episcopal Church |
| Robinson, Horney, House |
| Rochester Downtown Historic District |
| Rockville Chautauqua Pavilion |
| Rockville Historic District |
| Roelker, John H., House |
| Rohrer, Joseph J., Farm |
| Roosevelt, Theodore, High School |
| Roots, Francis T., Building |
| Rose, David Garland, House |
| Rose, F.D., Building |
| Roselawn-Forest Heights Historic District |
| Rosenberger Building |
| Rose Terrace |
| Roseville Bridge |
| Rudicel, George, Polygonal Barn |
| Rumsey, J. Claude, House |
| Rush County Bridge No. 188 |
| Rush County Courthouse |
| Rush Creek Bridge |
| Rushville Commercial Historic District |
| Sablotny, Barney, House |
| Sage-Robinson-Nagel House |
| Saint James Court |
| Saint John's Episcopal Church |
| Saint Paul's Evangelical Lutheran Church |
| Salem Downtown Historic District |
| Salem Methodist Episcopal Church |
| Salem's Baptist Church |
| Savoy |
| Schaeffer, Michael, House |
| Schenck, Benjamin, Mansion |
| Schlemmer, Otto, Building |
| Schmitz Block |
| Schnull-Rauch House |
| Scholle, Mattias, House |
| Schwietermann Hall |
| Scott, Andrew F., House |
| Scottish Rite Cathedral |
| Scott-Lucas House |
| Scott-Rumley House |
| Scottsburg Courthouse Square Historic District |
| Scott Street Pavilion |
| Scudder, Dr. John A., House |
| Second Baptist Church |
| Second St. Joseph Hotel |
| Secrest Ferry Bridge |
| Secrest-Wampler House |
| Seiberling Mansion |
| Selig's Dry Goods Company Building |
| Seller's Standard Station and Pullman Diner |
| Senour, Frank, Round Barn |
| Service, Jeremiah H., House |
| Seville, The |
| Sewell, William C. B., House |
| Seybold, George, House |
| Seymour Commercial Historic District |
| Shadowwood |
| Shafer, Joseph, Farm |
| Shakamak State Park Historic District |
| Sharp, Mathias, House |
| Sheffield Inn |
| Shelburn Interurban Depot-THI&E Interurban Depot |
| Shelby County Courthouse |
| Shelby Place Historic District |
| Shelbyville Commercial Historic District |
Data from United States Park Service and Wikidata
