New Jersey - Significance region: Local
| Rockhill Agricultural Historic District |
| Rockleigh Historic District |
| Rocky Hill Historic District |
| Rogers, John, House |
| Romer Shoal Light Station |
| Romeyn-Oldis-Brinkerhoff House |
| Romine-Van Voorhis House |
| Roosevelt Hospital |
| Roseberry, John, Homestead |
| Rosemont Rural Agricultural District |
| Roy, Dr. E. G., House |
| Rufwud Cottage |
| Rulon, John C., House |
| Rutherford Hall |
| Sacred Heart Church |
| Saddle River Center Historic District |
| Saint Ann Roman Catholic Church and Rectory |
| Saint Mary of Mount Virgin Roman Catholic Church |
| Saint Mary's Catholic Church Complex |
| Saint Peter's-By-The-Sea Episcopal Church |
| Saint Peter the Apostle Church |
| Salem County Insane Asylum |
| Salter's Mill |
| Sandbrook-Headquarters Road stone-arch bridge over a tributary of the Third Neshanic River |
| Sand Brook Historic District |
| Sandy Hook Archeological Site |
| Santa Rita Apartments |
| Sayre Homestead |
| Schoolhouse |
| Schuyler-Colfax House |
| Scotch Plains Baptist Church, Parsonage and Cemetery |
| Scotch Plains School |
| Seabrook-Wilson House |
| Seated Lincoln |
| Second Reformed Dutch Church |
| Seeley, Samuel W., House |
| Segal Building |
| Seigle Homestead |
| Sergeantsville Historic District |
| Seven Stars Tavern |
| Seward House |
| Shady Rest Golf and Country Club |
| Shamong Hotel |
| Sharp, Edward, House |
| Sharpenstine Farmstead |
| Ship John Shoal Light Station |
| Shippen Manor |
| Shoemaker-Houck Farm |
| Shotwell, Benjamin, House |
| Shrewsbury Historic District |
| Shrewsbury Township Hall |
| Siloam Cemetery |
| Silver Lake Historic District |
| Simpson United Methodist Church |
| Singleton-Lathem-Large House |
| Six Mile Run Historic District |
| Six Mile Run Reformed Church |
| Slater's Mill |
| Smalley-Wormser House |
| Smith, Albert, House |
| Smith-Austermuhl Insurance Company |
| Smith, Bridget, House |
| Smith, David V., House |
| Smith, J. Harper, Mansion |
| Smith, John, House |
| Smith, John, House |
| Smith Mansion |
| Smith, Nathaniel, House |
| Smith-Ribsam House |
| Smith, S. C., House |
| Smithville Apothecary |
| Smithville Historic District |
| Smith, William, House |
| Smock, Matthias, House |
| Snable, Andrew, House |
| Solomon Wesley United Methodist Church |
| Somerset Roller Mills |
| Somers Mansion |
| South Branch Historic District |
| South Branch Schoolhouse |
| South Camden Historic District |
| South Camden Trust Company |
| South Church Manse |
| South Jersey Gas, Electric and Traction Company Office Building |
| South Orange Fire Department |
| South Orange Village Hall |
| South Park Calvary United Presbyterian Church |
| South Schraalenburgh Church |
| South Tuckahoe Historic District |
| Speer, Reynier, House |
| Spring Brook House |
| Springside Public School |
| Spring Valley Christian Church Site |
| Squan Beach Life-Saving Station #9 |
| Stafford, John, Historic District |
| Stage House Inn |
| Stagg, John C., House |
| Stanley Theater |
| St. Anthony of Padua Roman Catholic Church |
| Stanton Historic Rural District |
Data from United States Park Service and Wikidata
