Arkansas - Criteria: A (event)
| Saint Anthony's Catholic Church |
| Saint Anthony's Hospital |
| Saint Scholastica Convent |
| Sanitarium Lake Bridges Historic District |
| Scatterville Cemetery |
| School Addition Historic District |
| Scotland Cemetery |
| Scott Cemetery |
| Scott City County Jail, (Old) |
| Searcy Confederate Monument |
| Searcy County Courthouse |
| Searcy Post Office |
| Seed Warehouse No. 5 |
| Selma Methodist Church |
| Selma Rosenwald School |
| Shady Grove Delmar Church and School |
| Shady Lake Caretaker's House |
| Shaver, James D., House |
| Shelton, Lynn, American Legion Post No. 27 |
| Shiloh Church |
| Shoppach House |
| Short Mountain Creek Bridge |
| Simpson, Stanley, Farmstead Picking Shed |
| Sims Hotel |
| Singleton Family Cemetery |
| Sink-Crumb Post No. 72 American Legion Hut |
| Smackover Historic Commercial District |
| Smithville Public School Building |
| Solomon Grove Smith-Hughes Building |
| Son's Chapel |
| Sorrells, Walter B., Cottage |
| South Elementary School |
| Southern Mercantile Building |
| South Fork Bridge |
| South Main Street Commercial Historic District |
| South Main Street Residential Historic District |
| Southwestern Proving Ground Airport Historic District |
| Southwestern Proving Ground Building No. 129 |
| Southwestern Proving Ground Building No. 4 |
| Southwestern Proving Ground Building No. 5 |
| Southwestern Proving Ground Officers Quarters Historic District |
| Springdale Poultry Industry Historic District |
| Springfield Bridge |
| Springfield to Fayetteville Road-Cross Hollow Segment |
| Springfield to Fayetteville Road-Elkhorn Tavern Segment |
| Spring Lake Bridge |
| Spring Lake Recreation Area Historic District |
| Spring Mill |
| Spring River Bridge |
| Spring Valley School District 120 Building |
| Square Rock Dipping Vat |
| Standard Ice Company Building |
| Star City Commercial Historic District |
| Star City Confederate Memorial |
| State Line Marker |
| St. Charles Battle Monument |
| St. Charles Battle Site |
| Stebbins and Roberts Office Building and Factory |
| St. Francis River Bridge |
| St. Francis River Bridge |
| Stifft Station Historic District |
| Stipe Cotton Gin |
| St. Joe Missouri and North Arkansas Railroad Depot |
| St. Louis San Francisco (Frisco) Railway Coach #661 |
| St. Louis San Francisco (Frisco) Railway Steam Locomotive #4003 |
| St. Louis-San Francisco Overpass |
| St. Louis Southwestern Railway (Cotton Belt Route) Caboose #2325 |
| St. Louis Southwestern Railway (Cotton Belt Route) Relief Train |
| St. Louis Southwestern Railway (Cotton Belt Route) Steam Locomotive #336 |
| St. Louis Southwestern Railway Steam Locomotive #819 |
| St. Mark's Episcopal Church |
| St.Mary's AME Church-Pocahontas Colored School |
| Stokenbury Cemetery |
| St. Paul Lutheran School |
| St. Paul School Building |
| St. Peter's Cemetery |
| St. Peter's Rock Baptist Church |
| Strengthen the Arm of Liberty Monument-Pine Bluff |
| Studebaker Showroom |
| Student Union Building-University of Arkansas, Fayetteville |
| Stuttgart Commercial Historic District |
| Sugar Creek Vista Overlook |
| Sugarloaf Fire Tower Historic District |
| Sulphur Springs Cemetery |
| Sulphur Springs Old School Complex Historic District |
| Sulphur Springs Park Reserve |
| Sumner-White Dipping Vat |
| Sutherlin Cabin |
| Swift Building |
| Sylvan Hills Country Club Golf Course |
| Taborian Hall |
| Tall Peak Fire Tower |
| Tate's Bluff Fortification |
| Tavern, The |
| Taylor Building |
| Taylor Field |
| Taylor Rosamond Motel Historic District |
| Taylor, Samuel P., Service Station |
| Telephone Exchange Building |
| Temple Beth El Cemetery |
Data from United States Park Service and Wikidata
