Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| South Twin Lake 1 | Reservoir | 441 | Taylor | 45 16 18 N | 090 26 07 W |
| South Two Lakes | Lake | 484 | Oneida | 45 46 37 N | 089 36 51 W |
| South Valley Cemetery | Cemetery | 309 | Trempealeau | 44 32 18 N | 091 13 41 W |
| South Valley School (historical) | School | 307 | Trempealeau | 44 32 20 N | 091 13 41 W |
| South Washburn School (historical) | School | 295 | Clark | 44 27 31 N | 090 33 29 W |
| South Wayne | Populated Place | 253 | Lafayette | 42 34 08 N | 089 52 47 W |
| South Willow Stock and Dairy Farm | Locale | 241 | Richland | 43 20 39 N | 090 19 14 W |
| South Wood County Historical Society Museum | Building | 304 | Wood | 44 23 16 N | 089 49 44 W |
| South Wood County Park | Park | 310 | Wood | 44 21 51 N | 089 44 26 W |
| South Wood County Park 2WP244 Dam | Dam | 309 | Wood | 44 21 54 N | 089 45 24 W |
| South Worden School (historical) | School | 340 | Clark | 44 52 21 N | 090 52 56 W |
| South York Cemetery | Cemetery | 282 | Dane | 43 11 48 N | 089 02 53 W |
| Southeast Baptist Church | Church | 196 | Milwaukee | 42 54 55 N | 087 51 15 W |
| Southeast Recreation Facility | Building | 262 | Dane | 43 04 13 N | 089 23 53 W |
| Southern Wisconsin Center for the Developmentally Disabled | School | 255 | Racine | 42 41 33 N | 088 04 50 W |
| Southgate Shopping Center | Locale | 200 | Milwaukee | 42 59 02 N | 087 56 58 W |
| Southport | Park | 175 | Kenosha | 42 33 47 N | 087 48 42 W |
| Southport Elementary School | School | 185 | Kenosha | 42 33 52 N | 087 49 10 W |
| Southport Park | Park | 180 | Kenosha | 42 33 42 N | 087 48 46 W |
| Southren Door High School | School | 201 | Door | 44 46 18 N | 087 31 24 W |
| Southren Door High School | School | 201 | Door | 44 46 18 N | 087 31 24 W |
| Southridge Mall Shopping Center | Locale | 237 | Milwaukee | 42 56 53 N | 088 00 16 W |
| Southside Alliance Church | Church | 186 | Sheboygan | 43 43 01 N | 087 42 57 W |
| Southside Cemetery | Cemetery | 188 | Sheboygan | 43 42 45 N | 087 43 09 W |
| Southside Church of God | Church | 198 | Milwaukee | 43 00 28 N | 087 56 37 W |
| Southside Community Church | Church | 231 | Winnebago | 44 01 29 N | 088 34 51 W |
| Southside Elementary School | School | 241 | Monroe | 43 56 17 N | 090 47 40 W |
| Southview Hospital | Hospital | 207 | Milwaukee | 43 00 48 N | 087 56 35 W |
| Southview School | School | 306 | Dodge | 43 25 44 N | 088 32 27 W |
| Southwest Branch Kellogg Public Library | Building | 184 | Brown | 44 30 27 N | 088 02 36 W |
| Southwest Branch Kenosha Public Library | Building | 194 | Kenosha | 42 33 33 N | 087 51 12 W |
| Southwest High School | School | 222 | Brown | 44 31 05 N | 088 06 53 W |
| Southwest Lake | Lake | 425 | Bayfield | 46 15 01 N | 091 09 60 W |
| Southwest Prairie Church | Church | 322 | Vernon | 43 25 34 N | 090 59 34 W |
| Sovereign Grace Baptist Church | Church | 371 | Marathon | 44 58 27 N | 089 38 20 W |
| Sowinski Landing Field | Airport | 503 | Oneida | 45 44 45 N | 089 16 26 W |
| Spafford Creek | Stream | | Lafayette | 42 34 28 N | 089 53 21 W |
| Spaghetti Corners | Locale | 260 | Dane | 43 04 03 N | 089 24 03 W |
| Spanbauer Field | Park | 232 | Winnebago | 44 00 42 N | 088 34 02 W |
| Sparkling Lake | Lake | 494 | Vilas | 46 00 36 N | 089 41 59 W |
| Sparta | Populated Place | 241 | Monroe | 43 56 39 N | 090 48 46 W |
| Sparta City Hall | Building | 241 | Monroe | 43 56 35 N | 090 48 45 W |
| Sparta Creek | Stream | | Monroe | 44 00 46 N | 090 39 28 W |
| Sparta Free Library | Building | 239 | Monroe | 43 56 41 N | 090 48 43 W |
| Sparta High School | School | 246 | Monroe | 43 56 56 N | 090 49 20 W |
| Sparta Landing Field | Airport | 244 | Monroe | 43 57 39 N | 090 46 21 W |
| Sparta Middle School | School | 240 | Monroe | 43 56 43 N | 090 48 32 W |
| Sparta Post Office | Post Office | 241 | Monroe | 43 56 39 N | 090 48 43 W |
| Sparta-Fort McCoy Airport | Airport | 252 | Monroe | 43 57 30 N | 090 44 16 W |
| Sparta-Gundersen Clinic | Hospital | 241 | Monroe | 43 56 36 N | 090 48 53 W |
| Spassland Park | Park | 273 | Washington | 43 12 00 N | 088 06 37 W |
| Spaulding | Populated Place | 296 | Jackson | 44 21 21 N | 090 24 56 W |
| Spaulding Bridge | Bridge | 243 | Green Lake | 43 50 22 N | 088 54 25 W |
| Spaulding Creek | Stream | | Waupaca | 44 36 57 N | 089 00 10 W |
| Spaulding Hill | Summit | 299 | Green Lake | 43 49 45 N | 088 53 13 W |
| Spaulding Street Park | Park | 247 | Dodge | 43 12 25 N | 088 43 33 W |
| Spauldings Pond | Lake | 265 | Rock | 42 43 55 N | 088 56 28 W |
| Spearhead Point Campground | Locale | 428 | Taylor | 45 19 40 N | 090 26 42 W |
| Speck Marsh | Swamp | 290 | Jackson | 44 18 21 N | 090 34 02 W |
| Speck Oaks | Populated Place | 290 | Jackson | 44 18 01 N | 090 34 14 W |
| Spectacle Lake | Lake | 534 | Vilas | 46 00 18 N | 089 01 24 W |
| Spectacle Lake Campground | Locale | 536 | Vilas | 46 00 32 N | 089 00 35 W |
| Speedwing Field | Airport | 297 | Wood | 44 17 46 N | 090 02 37 W |
| Speel School (historical) | School | 229 | Outagamie | 44 15 12 N | 088 20 40 W |
| Speith Hole | Valley | | Buffalo | 44 09 34 N | 091 43 48 W |
| Spence Elementary School | School | 201 | La Crosse | 43 47 16 N | 091 13 20 W |
| Spence Lake | Lake | 329 | Chippewa | 45 17 15 N | 091 18 58 W |
| Spencer | Populated Place | 399 | Marathon | 44 45 28 N | 090 17 48 W |
| Spencer Creek | Stream | | Forest | 45 30 56 N | 088 36 03 W |
| Spencer Creek | Stream | | Monroe | 44 05 28 N | 090 51 05 W |
| Spencer Creek | Stream | | Shawano | 44 46 42 N | 088 48 07 W |
| Spencer High School | School | 399 | Marathon | 44 45 33 N | 090 17 37 W |
| Spencer Lake | Lake | 297 | Burnett | 45 44 15 N | 092 11 09 W |
| Spencer Lake | Lake | 285 | Marinette | 45 24 05 N | 088 07 22 W |
| Spencer Lake | Lake | 255 | Waupaca | 44 17 25 N | 089 06 11 W |
| Spencer Lake Bible Camp | Locale | 260 | Waupaca | 44 17 24 N | 089 05 56 W |
| Spencer Lake Memorial Cemetery | Cemetery | 262 | Waupaca | 44 17 09 N | 089 05 49 W |
| Spencer Marsh | Swamp | 395 | Clark | 44 46 13 N | 090 20 01 W |
| Spencer-Robinson Ditch | Canal | 284 | Juneau | 44 06 36 N | 090 09 11 W |
| Spencerian College | School | 206 | Milwaukee | 43 03 53 N | 087 56 56 W |
| Spice Lake | Lake | 251 | Oconto | 44 55 48 N | 088 20 18 W |
| Spicer Cemetery | Cemetery | 250 | Columbia | 43 36 48 N | 089 25 21 W |
| Spider and Moquah Lakes 19 | Reservoir | 46 | Ashland | 46 16 00 N | 090 52 06 W |
| Spider Creek | Stream | | Ashland | 46 13 53 N | 090 51 22 W |
| Spider Creek | Stream | | Langlade | 45 24 05 N | 089 02 50 W |
| Spider Creek | Stream | | Sawyer | 46 02 32 N | 091 14 08 W |
| Spider Creek 2WP1403 Dam | Dam | 463 | Langlade | 45 24 42 N | 089 02 00 W |
| Spider Creek Flowage | Lake | 463 | Langlade | 45 24 58 N | 089 01 35 W |
| Spider Creek Flowage | Reservoir | 463 | Langlade | 45 24 42 N | 089 02 00 W |
| Spider Island | Island | 179 | Door | 45 12 34 N | 086 58 33 W |
| Spider Lake | Lake | 432 | Ashland | 46 14 02 N | 090 51 33 W |
| Spider Lake | Lake | 403 | Barron | 45 37 40 N | 091 55 39 W |
| Spider Lake | Lake | 336 | Bayfield | 46 32 34 N | 091 24 36 W |
| Spider Lake | Lake | 328 | Bayfield | 46 32 36 N | 091 13 38 W |
| Spider Lake | Lake | 317 | Douglas | 46 13 51 N | 091 53 58 W |
| Spider Lake | Lake | 488 | Iron | 46 12 43 N | 090 01 34 W |
| Spider Lake | Lake | 491 | Oneida | 45 45 39 N | 089 26 32 W |
| Spider Lake | Lake | 424 | Sawyer | 46 05 51 N | 091 13 25 W |
| Spider Lake | Lake | 488 | Vilas | 46 07 16 N | 089 49 24 W |
| Spider Lake | Lake | 402 | Washburn | 45 43 36 N | 091 35 24 W |
| Spider Lake Church | Church | 430 | Sawyer | 46 04 13 N | 091 15 28 W |
| Spider Lake School (historical) | School | 431 | Sawyer | 46 04 12 N | 091 13 59 W |
| Spider Lake Townhall | Building | 431 | Sawyer | 46 04 12 N | 091 13 59 W |
| Spies Lake | Lake | 265 | Marinette | 45 23 49 N | 088 03 08 W |
| Spies Lake | Lake | 261 | Oconto | 45 05 26 N | 088 15 09 W |
| Spike Horn Bay | Bay | 176 | Door | 45 05 12 N | 087 03 10 W |
| Spikehorn Creek | Stream | | Marinette | 45 41 34 N | 087 56 16 W |
| Spiller Creek | Stream | | Price | 45 58 36 N | 090 31 32 W |
| Spillerberg Creek | Stream | | Ashland | 46 13 05 N | 090 37 15 W |
| Spillerberg Lake | Lake | 466 | Ashland | 46 11 54 N | 090 40 26 W |