Arkansas - Criteria: C (architecture/engineering)
| Roundtop Filling Station |
| Routh-Bailey House |
| Royal Theatre |
| Roy's Office Supply Building |
| Royston, Grandison D., House |
| Ruddell Mill Site |
| Rumph House |
| Rumph Mortuary |
| Runyan, J. P., House |
| Rusher Hotel |
| Rush Historic District |
| Rushton Clinic, The |
| Russell, John, House |
| Russellville Downtown Historic District |
| Russellville Masonic Temple |
| Russellville Public Library |
| Saddle Store |
| Saenger Theater |
| Safferstone House |
| Sager, Simon, Cabin |
| Sailor, C.L., House |
| Saint Andrews Catholic Cathedral |
| Saint Andrew's Episcopal Church |
| Saint Scholastica Convent |
| Saline Cemetery |
| Saline County Courthouse |
| Salter, James and Jewell, House |
| Sanders-Hollabaugh House |
| Sanders House |
| Sandidge, June, House |
| Sanitarium Lake Bridges Historic District |
| Sardis Methodist Church |
| Scanlan, Art, House |
| Schaer, Fred and Lucy Alexander, House |
| Schaer House |
| School Addition Historic District |
| Schriver House |
| Scott City County Jail, (Old) |
| Scott County Courthouse |
| Scott-Davis House |
| Scull Historic District |
| Searcy Post Office |
| Sears House |
| Sebastian County Courthouse-Ft. Smith City Hall |
| Sebastian County Jail, Old |
| Sebastian County Road 4G Bridge |
| Seed Warehouse No. 5 |
| Segraves, Warren, House |
| Self Creek Bridge |
| Sellers Farm |
| Sellers House |
| Sellers House |
| Selma Methodist Church |
| Shady Grove Delmar Church and School |
| Shady Grove School |
| Shady Lake Caretaker's House |
| Shaheen-Goodfellow Weekend Cottage |
| Shaver, Charles W., House |
| Shaver, James D., House |
| Shaver, John W., House |
| Shaver, William, House |
| Shaw, Tillman, House |
| Shelton-Lockeby House |
| Shelton, Lynn, American Legion Post No. 27 |
| Shelton-Rich Farmstead |
| Sherrill Methodist Episcopal Church, South |
| Sherrill, Silas, House |
| Shiloh Historic District |
| Shiloh House |
| Shoppach House |
| Shores Warehouse |
| Short-Dodson House |
| Short Mountain Creek Bridge |
| Short, William A., House |
| Shue House |
| Shull House |
| Shutter, John, House |
| Siloam Springs City Park |
| Siloam Springs Downtown Historic District |
| Simpson, Stanley, Farmstead Picking Shed |
| Sims Hotel |
| Singleton Family Cemetery |
| Sink-Crumb Post No. 72 American Legion Hut |
| Skillern House |
| Slack-Comstock-Marshall Farm |
| Smackover Historic Commercial District |
| Smith, A. J., House |
| Smith, C. L., & Son General Store |
| Smith Hospital |
| Smith House |
| Smith House |
| Smith House |
| Smith, Jessie B., House |
| Smith, Joel, House |
| Smith-McCurry House |
| Smith, Morgan, Dr., House |
| Smith, Rowland B., House |
| Smith, S. G., House |
| Smith, Sylvester, Farmstead |
| Smith, Tom, House |
Data from United States Park Service and Wikidata
