Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Second Lake | Lake | 331 | Portage | 44 34 56 N | 089 39 45 W |
| Second Lake | Lake | 196 | Trempealeau | 43 59 48 N | 091 25 09 W |
| Second Lake | Lake | 334 | Waushara | 44 12 26 N | 089 27 55 W |
| Second Point | Cape | 259 | Dane | 43 05 33 N | 089 25 57 W |
| Second Porcupine Rapids | Rapids | 399 | Sawyer | 45 42 04 N | 090 47 44 W |
| Second Rapids | Rapids | 452 | Ashland | 45 59 11 N | 090 22 36 W |
| Second South Branch Oconto River | Stream | | Oconto | 45 08 27 N | 088 35 35 W |
| Second Stony Island | Island | 261 | Dodge | 43 29 06 N | 088 37 21 W |
| Second Wannigan Rapids | Rapids | 393 | Sawyer | 45 40 06 N | 090 48 44 W |
| Second Ward | Civil | 267 | Calumet | 44 02 13 N | 088 09 37 W |
| Second Ward Public School (historical) | School | 457 | Langlade | 45 08 41 N | 089 09 14 W |
| Second Ward School (historical) | School | 269 | Dane | 43 04 58 N | 089 22 49 W |
| Second Ward School (historical) | School | 267 | Sauk | 43 28 19 N | 089 44 05 W |
| Secret Lake | Lake | 525 | Vilas | 46 01 18 N | 088 59 12 W |
| Secrist H2526 Dam | Dam | 231 | Buffalo | 44 24 24 N | 091 49 25 W |
| Section Eight Church | Church | 236 | Marinette | 45 05 19 N | 088 06 16 W |
| Section Eight School (historical) | School | 228 | Marinette | 45 05 31 N | 088 05 44 W |
| Section Elementary School | School | 286 | Waukesha | 42 53 32 N | 088 22 55 W |
| Section Seven School (historical) | School | 212 | Marinette | 45 04 47 N | 087 59 38 W |
| Section Seven Swamp | Swamp | 250 | Kewaunee | 44 23 52 N | 087 45 38 W |
| Section Ten Church | Church | 381 | Barron | 45 32 19 N | 091 56 59 W |
| Section Ten Lake | Lake | 433 | Langlade | 45 16 30 N | 088 43 39 W |
| Section Ten School | School | 380 | Barron | 45 32 05 N | 091 57 01 W |
| Section Thirty Lake | Lake | 391 | Oconto | 45 13 11 N | 088 40 41 W |
| Section Twenty Creek | Stream | | Sawyer | 45 46 06 N | 091 15 36 W |
| Sedevie Coulee | Valley | | La Crosse | 43 45 48 N | 090 57 17 W |
| Sedge Lake | Lake | 357 | Polk | 45 35 05 N | 092 16 26 W |
| Sedgwick | Populated Place | 260 | Ashland | 46 28 01 N | 090 36 20 W |
| Seed Lake | Lake | 477 | Oneida | 45 43 60 N | 089 39 06 W |
| Seeley | Populated Place | 387 | Sawyer | 46 07 16 N | 091 21 41 W |
| Seeley Creek | Stream | | Sauk | 43 27 07 N | 089 51 15 W |
| Seeley G Mudd Library | Building | 238 | Outagamie | 44 15 42 N | 088 23 53 W |
| Seeley Lake | Lake | 263 | Sauk | 43 25 56 N | 089 52 15 W |
| Seeley Lake 31 | Reservoir | 262 | Sauk | 43 26 12 N | 089 51 42 W |
| Seeley Lookout Tower | Tower | 532 | Sawyer | 46 08 52 N | 091 17 02 W |
| Seering Island | Island | 261 | Dodge | 43 28 37 N | 088 39 21 W |
| Segoe Park | Park | 300 | Dane | 43 03 22 N | 089 27 43 W |
| Seidel Creek | Stream | | Florence | 45 51 19 N | 088 21 02 W |
| Seidel Lake | Lake | 381 | Florence | 45 52 05 N | 088 21 07 W |
| Seidel Lake | Lake | 209 | Kewaunee | 44 26 44 N | 087 31 31 W |
| Seif Cemetery | Cemetery | 342 | Clark | 44 40 08 N | 090 44 28 W |
| Seine Hill | Summit | 331 | Pepin | 44 32 10 N | 092 09 01 W |
| Seitz Lake | Lake | 410 | Ashland | 46 18 50 N | 090 52 35 W |
| Selenski School (historical) | School | 469 | Langlade | 45 09 45 N | 089 04 24 W |
| Selfridge Knoll | Summit | 308 | Monroe | 43 59 02 N | 090 42 01 W |
| Selfridge Park | Park | 281 | Fond du Lac | 43 50 33 N | 088 50 03 W |
| Sellery Hall | Building | 264 | Dane | 43 04 18 N | 089 23 59 W |
| Sellin Lake | Lake | 382 | Oconto | 45 19 20 N | 088 31 53 W |
| Sells Lake | Lake | 463 | Ashland | 46 08 04 N | 090 30 32 W |
| Sells Lake | Lake | 489 | Iron | 46 12 12 N | 090 02 12 W |
| Selmer School (historical) | School | 311 | Waupaca | 44 35 30 N | 089 07 20 W |
| Seminary Park | Park | 273 | Walworth | 42 35 19 N | 088 25 52 W |
| Seminary Springs | Populated Place | 276 | Dane | 43 06 31 N | 089 14 55 W |
| Seneca | Populated Place | 383 | Crawford | 43 15 54 N | 090 57 30 W |
| Seneca Cemetery | Cemetery | 289 | Shawano | 44 47 24 N | 088 52 45 W |
| Seneca Lake | Lake | 496 | Vilas | 45 55 15 N | 089 18 49 W |
| Senn Lake | Lake | 316 | Fond du Lac | 43 33 42 N | 088 19 35 W |
| Sensenbrenner Hall | Building | 196 | Milwaukee | 43 02 18 N | 087 55 34 W |
| Sensiba State Wildlife Area | Park | 178 | Brown | 44 38 22 N | 088 00 59 W |
| Sensnovis G 9115 Dam | Dam | 342 | Sauk | 43 35 24 N | 090 14 06 W |
| Sentinal Point Lookout Tower | Tower | 511 | Price | 45 58 15 N | 090 04 53 W |
| Sentinel Ash School (historical) | School | 395 | Rusk | 45 32 11 N | 091 19 07 W |
| Sentry World Golf Course | Locale | 343 | Portage | 44 32 47 N | 089 33 45 W |
| Serley Camp Trail | Trail | 442 | Rusk | 45 36 46 N | 091 21 18 W |
| Servants of Mary Cemetery | Cemetery | 347 | Rusk | 45 27 19 N | 091 06 50 W |
| Service Memorial Institute | Building | 270 | Dane | 43 04 27 N | 089 24 25 W |
| Session Valley | Valley | | Trempealeau | 44 34 53 N | 091 32 50 W |
| Seth Creek | Stream | | Chippewa | 44 59 42 N | 091 11 36 W |
| Setting Lake | Lake | 410 | Langlade | 45 15 54 N | 088 41 28 W |
| Settlement School | School | 198 | Door | 45 08 59 N | 087 07 54 W |
| Sevastopol School | School | 211 | Door | 44 53 26 N | 087 17 23 W |
| Sevastopol Township Park | Park | 184 | Door | 44 55 23 N | 087 11 37 W |
| Sevastopol Township Park | Park | 184 | Door | 44 55 23 N | 087 11 37 W |
| Sevastpool School | School | 211 | Door | 44 53 26 N | 087 17 23 W |
| Seven Island Lake | Lake | 525 | Lincoln | 45 25 29 N | 089 28 04 W |
| Seven Mile 1909c361 Dam | Dam | 502 | Oneida | 45 52 30 N | 089 04 12 W |
| Seven Mile Lake 14 | Reservoir | 502 | Oneida | 45 52 30 N | 089 04 12 W |
| Seven Oaks School | School | 331 | Lafayette | 42 47 35 N | 090 10 08 W |
| Seven Points | Ridge | 387 | Clark | 44 39 26 N | 090 46 34 W |
| Sevenmile Creek | Stream | | Eau Claire | 44 49 08 N | 091 22 31 W |
| Sevenmile Creek | Stream | | Florence | 45 53 58 N | 088 22 02 W |
| Sevenmile Creek | Stream | | Fond du Lac | 43 42 10 N | 088 34 11 W |
| Sevenmile Creek | Stream | | Juneau | 43 46 52 N | 089 59 54 W |
| Sevenmile Creek | Stream | | Oneida | 45 52 30 N | 089 05 17 W |
| Sevenmile Creek | Stream | | Sheboygan | 43 51 03 N | 087 43 40 W |
| Sevenmile Creek | Stream | | Wood | 44 16 54 N | 089 53 11 W |
| Sevenmile Lake | Lake | 405 | Florence | 45 55 04 N | 088 22 20 W |
| Sevenmile Lake | Lake | 503 | Oneida | 45 52 48 N | 089 03 02 W |
| Sevenmile Lake Campground | Locale | 524 | Forest | 45 52 41 N | 089 02 33 W |
| Sevenmile School (historical) | School | 356 | Crawford | 43 06 11 N | 091 04 01 W |
| Seventeen Flowage | Reservoir | 287 | Jackson | 44 18 42 N | 090 34 29 W |
| Seventeen Reservoir | Reservoir | 287 | Jackson | 44 18 42 N | 090 34 24 W |
| Seventh Avenue Park | Park | 454 | Langlade | 45 08 14 N | 089 09 52 W |
| Seventh Day Adventist | Church | 342 | Barron | 45 27 48 N | 091 44 04 W |
| Seventh Day Adventist Church | Church | 207 | Ashland | 46 34 58 N | 090 53 25 W |
| Seventh Day Adventist Church | Church | 180 | Brown | 44 30 57 N | 088 01 37 W |
| Seventh Day Adventist Church | Church | 279 | Chippewa | 44 55 09 N | 091 23 20 W |
| Seventh Day Adventist Church | Church | 249 | Columbia | 43 33 18 N | 089 25 33 W |
| Seventh Day Adventist Church | Church | 261 | Dane | 43 02 32 N | 089 18 03 W |
| Seventh Day Adventist Church | Church | 263 | Dunn | 44 52 24 N | 091 55 25 W |
| Seventh Day Adventist Church | Church | 269 | Eau Claire | 44 48 37 N | 091 28 38 W |
| Seventh Day Adventist Church | Church | 275 | Eau Claire | 44 48 02 N | 091 26 51 W |
| Seventh Day Adventist Church | Church | 235 | Fond du Lac | 43 46 07 N | 088 25 54 W |
| Seventh Day Adventist Church | Church | 207 | La Crosse | 43 49 09 N | 091 13 24 W |
| Seventh Day Adventist Church | Church | 455 | Langlade | 45 08 15 N | 089 09 05 W |
| Seventh Day Adventist Church | Church | 365 | Marathon | 44 55 36 N | 089 39 45 W |
| Seventh Day Adventist Church | Church | 264 | Marquette | 43 46 47 N | 089 34 07 W |
| Seventh Day Adventist Church | Church | 208 | Milwaukee | 43 04 11 N | 087 56 11 W |
| Seventh Day Adventist Church | Church | 210 | Milwaukee | 43 04 44 N | 087 56 46 W |
| Seventh Day Adventist Church | Church | 245 | Monroe | 43 56 48 N | 090 49 22 W |