Arkansas - Significance region: Local
| Shaw, Tillman, House |
| Sheeks House |
| Shelton-Lockeby House |
| Shelton, Lynn, American Legion Post No. 27 |
| Shelton-Rich Farmstead |
| Sherrill Methodist Episcopal Church, South |
| Sherrill, Silas, House |
| Shiloh Church |
| Shiloh Historic District |
| Shiloh Missionary Baptist Church |
| Shoppach House |
| Short-Dodson House |
| Short Mountain Creek Bridge |
| Short, William A., House |
| Shue House |
| Shumaker Naval Ammunition Depot (NAD) 500-Man Barracks |
| Shumaker Naval Ammunition Depot (NAD) Administration Building |
| Shutter, John, House |
| Siloam Springs Downtown Historic District |
| Simpson, Stanley, Farmstead Picking Shed |
| 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 Creek Bridge |
| Smith Hospital |
| Smith House |
| Smith House |
| Smith, Jessie B., House |
| Smith, Joel, House |
| Smith-McCurry House |
| Smith, Morgan, Dr., House |
| Smith, Rowland B., House |
| Smith, Sylvester, Farmstead |
| Smith, Tom, House |
| Smithville Public School Building |
| Smith, William H., House |
| Smyrna Methodist Church |
| Snipes, Dr. Emmett, House |
| Snowball Gymnasium |
| Solomon Grove Smith-Hughes Building |
| Son's Chapel |
| South Elementary School |
| Southern Mercantile Building |
| Southern Trust Building |
| South Main Street Apartments Historic District |
| South Main Street Commercial Historic District |
| South Main Street Residential Historic District |
| South Scott Street Historic District |
| South Side Baptist Church |
| South Side High School Sign |
| Southwestern Bell Headquarters Building |
| Southwestern Proving Ground Building No. 129 |
| Southwestern Proving Ground Building No. 4 |
| Southwestern Proving Ground Building No. 5 |
| Sparks, James, House |
| Spears House |
| Spirit of the American Doughboy Monument-Fort Smith |
| Spirit of the American Doughboy Monument-Helena |
| Spring-Harrison Historic District |
| Spring Lake Recreation Area Historic District |
| Spring Mill |
| Spring River Bridge |
| Spring Valley School District 120 Building |
| Square Rock Dipping Vat |
| Staggs-Huffaker Building |
| St. Agnes Catholic Church |
| Stamps Store |
| Standard Ice Company Building |
| Standard Oil Company of Louisiana Oil Depot |
| Standard Oil Company Oil Station Garage Building |
| Standard Oil Company Oil Station Pumphouse |
| St. Anthony’s Catholic Church Historic District |
| State Highway 274 Bridge |
| State Highway 96 Bridge |
| St. Barnabas Episcopal Church |
| Steamboat House |
| Stebbins and Roberts Office Building and Factory |
| Steele-Dortch General Store |
| Stegall General Store |
| St. Elizabeth's Catholic Church |
| Stifft Station Historic District |
| Stipe Cotton Gin |
| Stitt House |
| St. Joe Missouri and North Arkansas Railroad Depot |
| St. John's Episcopal Church |
| St. John the Baptist Catholic Church |
| St. Joseph's Home |
| St. Louis San Francisco (Frisco) Railway Steam Locomotive #4003 |
| St. Luke's Catholic Church |
| St. Mark's Episcopal Church |
| St.Mary's AME Church-Pocahontas Colored School |
| St. Mary's Episcopal Church |
| Stokenbury Cemetery |
| Stokes, Fremont, House |
| Stokes House |
| Stone County Courthouse |
Data from United States Park Service and Wikidata
