| Slipper, The | 31 Santingley Lane, New Crofton, Wakefield, West Yorkshire, WF4 1JP |
| Slazengers Hockey Club | Slazengers Sports & Social Club, Southfield Lane, Wakefield, West Yorkshire, WF4 5BH |
| Slazenger Sports & Social Club | Southfields, Addingford, Horbury, West Yorkshire, WF4 5BH |
| Six Chimneys | 41/43 Kirkgate, Wakefield, West Yorkshire, WF1 1HX |
| Sitlington & District Round Table 1088 | c/o Tim Falconer, 1109 Dewsbury Road, Woodkirk, Dewsbury, West Yorkshire, WF12 7JN |
| Singing Chocker | Holywell Leisure Park, Park Road, Glasshoughton, Castleford, West Yorkshire, WF10 4RS |
| Simpsons Lane Academy | Sycamore Avenue, Knottingley, West Yorkshire, WF11 0PL |
| Silkwood Farm | Mothers Way, Silkwood Park, Ossett, Wakefield, West Yorkshire, WF5 9TR |
| Silhouettes Dance Majorettes | Wrenthorpe Primary School, Imperial Avenue, Wakefield, West Yorkshire, WF2 0LW |
| Silcoates School | Silcoates School, Wrenthorpe, Wakefield, West Yorkshire, WF2 0PD |
