| Salisbury Trench |
SU 2514 |
| Salterns 8 acre Pond (Lymington) |
SZ 3293 |
| Salterns Marsh (Lymington) |
SZ 3293 |
| Salterns Rubbish Tip (Portsmouth) |
SU 6701 |
| Sandy Point (Hayling Island) |
SZ 7498 |
| Selborne |
SU 7433 |
| Selborne Common |
SU 7333 |
| Set Thorns Inclosure |
SZ 2699 |
| Shalden |
SU 6941 |
| Shawford |
SU 4724 |
| Shawford Down |
SU 4624 |
| Sheepwash Farm (Purbrook) |
SU 6509 |
| Sheet |
SU 7524 |
| Shepherds Spring |
SU 3646 |
| Sherborne St John |
SU 6255 |
| Sherfield-on-Loddon |
SU 6757 |
| Sherfield English |
SU 2922 |
| Shipton Bellinger |
SU 2345 |
| Shortheath Ponds |
SU 7736 |
| Silchester |
SU 6362 |
| Sinah Common (Hayling Island) |
SZ 6999 |
| Sinah Golf Course |
SZ 6999 |
| Sinah Gravel Pit |
SZ 6999 |
| Sinah Warren |
SZ 6999 |
| Sleaford |
SU 8038 |
| Sleaford Reservoir |
SU 8039 |
| Sloden Inclosure |
SU 2113 |
| Slufters Inclosure |
SU 2210 |
| Snatchanger Farm (Odiham) |
SU 4749 |
| Soberton Down |
SU 6116 |
| Solent Breezes |
SU 5003 |
| Somerley Park |
SU 1307 |
| Somerley Rubbish Tip |
SU 1207 |
| Sopley |
SZ 1597 |
| Southampton Airport (Eastleigh) |
SU 4517 |
| Southampton Common |
SU 4114 |
| Southampton Eastern Docks |
SU 4210 |
| Southampton University |
SU 4215 |
| Southampton Western Docks |
SU 3812 |
| South Gorley |
SU 1610 |
| South Hayling |
SZ 7198 |
| Southleigh Woods |
SU 7408 |
| Southington Watercress Beds |
SU 5049 |
| South Oakley Inclosure |
SU 2205 |
| South Parade Pier (Portsmouth) |
SZ 6598 |
| Southsea |
SZ 6799 |
| Southsea Castle |
SZ 6498 |
| South Tidworth |
SU 2347 |
| South Warnborough |
SU 7247 |
| Southwick |
SU 6208 |
| South Wonston Farm |
SU 4636 |
| Sowley Farm |
SZ 3796 |
| Sowley Pond |
SZ 3796 |
| Sowley Marsh |
SZ 3796 |
| Sowley Shore |
SZ 3795 |
| Sparsholt |
SU 4331 |
| Spinnaker Lake (Blashford) |
SU 1507 |
| Spithead (The Solent) |
SZ 6195 |
| Squabb Wood (Romsey) |
SU 3321 |
| Standford |
SU 8134 |
| Stanmore (Winchester) |
SU 4628 |
| Stanswood Bay |
SU 4700 |
| St. Cross (Winchester) |
SU 4728 |
| St. Deny’s (Southampton) |
SU 4314 |
| Stephens Copse (Froxfield) |
SU 7026 |
| Steventon |
SU 5447 |
| St Mary Bourne |
SU 4250 |
| Stockbridge |
SU 3535 |
| Stockbridge Common |
SU 3534 |
| Stockbridge Down |
SU 3734 |
| Stoke Fruit Farm (Hayling) |
SU 7101 |
| Stoke |
SU 4051 |
| Stokes Bay |
SZ 5898 |
| Stone Point (Lepe) |
SZ 4598 |
| Stoney Cross |
SU 2511 |
| Stubbington |
SU 5503 |
| Stubbs Wood |
SU 3603 |
| Sturt Pond (Milford-on-Sea) |
SZ 2991 |
| Stratfield Saye |
SU 7061 |
| Sutton Scotney |
SU 4639 |
| Swanmore |
SU 5715 |
| Sway |
SZ 2798 |
