Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Welch Spring | Spring | 244 | Shannon | 37 23 38 N | 091 34 28 W |
| Welcher Hollow | Valley | | Camden | 38 09 14 N | 092 47 20 W |
| Welcome | Locale | 205 | Osage | 38 30 29 N | 091 44 07 W |
| Weldon | Populated Place | 166 | St. Charles | 38 41 27 N | 090 39 52 W |
| Weldon (historical) | Locale | 321 | Maries | 38 05 47 N | 092 02 30 W |
| Weldon Branch | Stream | | Gentry | 40 15 57 N | 094 21 34 W |
| Weldon Post Office | Post Office | 316 | Maries | 38 05 45 N | 092 02 31 W |
| Weldon River | Stream | | Grundy | 40 06 06 N | 093 38 55 W |
| Weldon Spring | Populated Place | 165 | St. Charles | 38 42 48 N | 090 41 21 W |
| Weldon Spring Church | Church | 180 | St. Charles | 38 45 20 N | 090 46 55 W |
| Weldon Spring Heights | Populated Place | 188 | St. Charles | 38 42 18 N | 090 41 14 W |
| Weldon Spring Ordnance Works | Locale | 204 | St. Charles | 38 41 45 N | 090 44 48 W |
| Weldon Spring State Conservation Area | Park | 151 | St. Charles | 38 40 30 N | 090 46 10 W |
| Weldon Springs | Spring | 167 | St. Charles | 38 42 47 N | 090 41 15 W |
| Weldons Branch | Stream | | Shelby | 39 50 29 N | 091 53 28 W |
| Welker Lake | Reservoir | 218 | Lincoln | 39 04 30 N | 090 54 36 W |
| Well Hollow | Valley | | Camden | 38 04 31 N | 092 54 06 W |
| Well Hollow | Valley | | Oregon | 36 52 11 N | 091 23 22 W |
| Well Hollow | Valley | | Reynolds | 37 15 39 N | 090 45 52 W |
| Well Hollow | Valley | | Shannon | 37 09 46 N | 091 10 06 W |
| Well Hollow | Valley | | Texas | 37 25 37 N | 091 44 55 W |
| Well School (historical) | School | 200 | Montgomery | 38 59 27 N | 091 16 50 W |
| Weller School | School | 409 | Greene | 37 13 40 N | 093 16 04 W |
| Weller School (historical) | School | 252 | Osage | 38 21 10 N | 091 40 29 W |
| Welles Church (historical) | Church | 434 | Webster | 37 20 32 N | 092 59 01 W |
| Wellington | Populated Place | 240 | Lafayette | 39 08 03 N | 093 58 58 W |
| Wellington-Naploeon Watershed Structure B-22 Dam | Dam | 220 | Lafayette | 39 08 18 N | 094 00 25 W |
| Wellington-Napoleon Watershed Structure A-21a Dam | Dam | 238 | Lafayette | 39 07 24 N | 094 00 37 W |
| Wellington-Napoleon Watershed Structure B-21 Dam | Dam | 229 | Lafayette | 39 08 06 N | 093 59 37 W |
| Wellington-Napoleon Watershed Structure B-23 Dam | Dam | 233 | Lafayette | 39 08 18 N | 094 00 55 W |
| Wellington-Napoleon Watershed Structure C-21 Dam | Dam | 225 | Lafayette | 39 07 18 N | 094 01 49 W |
| Wellington-Napoleon Watershed Structure D-21a Dam | Dam | 224 | Lafayette | 39 07 36 N | 094 32 37 W |
| Wellington-Napoleon Watershed Structure D-21b Dam | Dam | 216 | Lafayette | 39 07 54 N | 094 03 13 W |
| Wellington-Napoleon Watershed Structure F-21 Dam | Dam | 228 | Lafayette | 39 07 00 N | 094 05 01 W |
| Wellington-Napoleon Watershed Structure H-21 Dam | Dam | 235 | Lafayette | 39 07 12 N | 094 05 55 W |
| Wellington-Napoleon Watershed Structure J-21 Dam | Dam | 225 | Lafayette | 39 03 54 N | 094 06 13 W |
| Wellington-Napoleon Watershed Structure K-21 Dam | Dam | 232 | Lafayette | 39 03 48 N | 094 05 07 W |
| Wellington-Napoleon Watershed Structure N-21 Dam | Dam | 232 | Lafayette | 39 05 42 N | 094 05 07 W |
| Wellington-Napoleon Watershed Structure N-22 Dam | Dam | 233 | Lafayette | 39 05 54 N | 094 04 55 W |
| Wellington-Napoleon Watershed Structure V-21 Dam | Dam | 225 | Lafayette | 39 07 00 N | 093 59 25 W |
| Welliver Lake | Reservoir | 257 | Bates | 38 20 30 N | 094 29 31 W |
| Welliver Lake Dam | Dam | 257 | Bates | 38 20 30 N | 094 29 31 W |
| Wells Branch | Stream | | Platte | 39 24 24 N | 094 54 08 W |
| Wells Branch | Stream | | St. Clair | 38 01 35 N | 094 02 26 W |
| Wells Branch Hollow | Valley | | Morgan | 38 14 33 N | 092 55 59 W |
| Wells Creek | Stream | | Ripley | 36 31 51 N | 090 48 13 W |
| Wells Creek | Stream | | Ripley | 36 40 12 N | 090 53 27 W |
| Wells Creek School (historical) | School | 129 | Ripley | 36 40 44 N | 090 54 36 W |
| Wells Hollow | Valley | | Douglas | 36 53 49 N | 092 40 36 W |
| Wells Hollow | Valley | | Ozark | 36 37 49 N | 092 40 40 W |
| Wells Hollow | Valley | | Ozark | 36 33 56 N | 092 38 54 W |
| Wells Lake | Reservoir | 266 | Cass | 38 42 18 N | 094 31 13 W |
| Wells Lake | Reservoir | 271 | St. Francois | 37 58 12 N | 090 26 36 W |
| Wells Lake Dam | Dam | 266 | Cass | 38 42 18 N | 094 31 13 W |
| Wells Lake Dam | Dam | 271 | St. Francois | 37 58 12 N | 090 26 36 W |
| Wells School | School | 286 | Adair | 40 19 25 N | 092 32 38 W |
| Wells School | School | 219 | Clark | 40 18 24 N | 091 51 06 W |
| Wells School (historical) | School | 347 | Polk | 37 32 08 N | 093 15 29 W |
| Wells School (historical) | School | 302 | Putnam | 40 34 27 N | 092 46 52 W |
| Wellsford School | School | 285 | Shannon | 37 21 02 N | 091 28 32 W |
| Wellson Slough | Gut | 238 | Platte | 39 26 58 N | 094 58 37 W |
| Wellston | Populated Place | 158 | St. Louis | 38 40 22 N | 090 17 57 W |
| Wellsville | Populated Place | 249 | Montgomery | 39 04 19 N | 091 34 13 W |
| Wellsville City Lake Dam | Dam | 232 | Montgomery | 39 03 48 N | 091 34 59 W |
| Wellsville Lake | Lake | 217 | Montgomery | 39 02 10 N | 091 34 37 W |
| Wellsville Lake Dam | Dam | 217 | Montgomery | 39 02 10 N | 091 34 37 W |
| Wellsville Lake State Wildlife Management Ar | Park | 234 | Montgomery | 39 01 57 N | 091 34 38 W |
| Welschmeyers Dam | Dam | 233 | Osage | 38 18 42 N | 091 54 37 W |
| Welschmeyers Lake | Reservoir | 233 | Osage | 38 18 42 N | 091 54 37 W |
| Welsh Cemetery | Cemetery | 245 | Ozark | 36 40 27 N | 092 42 28 W |
| Welshmans Lake | Reservoir | 246 | St. Francois | 37 55 00 N | 090 34 48 W |
| Welshmans Lake Dam | Dam | 246 | St. Francois | 37 55 00 N | 090 34 48 W |
| Welshmeyer Lake Dam | Dam | 193 | Audrain | 39 05 30 N | 091 08 13 W |
| Welton Cemetery | Cemetery | 189 | Osage | 38 40 33 N | 091 41 39 W |
| Welton Ideker Dam | Dam | 300 | Holt | 40 13 48 N | 095 23 13 W |
| Welty Park | Park | 323 | Holt | 39 59 06 N | 095 08 13 W |
| WeMott School (historical) | School | 267 | Bates | 38 19 33 N | 094 16 25 W |
| Wendell L Heim Lake | Reservoir | 216 | Audrain | 39 10 48 N | 091 25 19 W |
| Wendells Lake | Reservoir | 226 | Pike | 39 10 54 N | 091 24 13 W |
| Wendells Lake Dam | Dam | 226 | Pike | 39 10 54 N | 091 24 13 W |
| Wendt Lake | Reservoir | 166 | Lincoln | 38 59 54 N | 090 48 30 W |
| Wendt Lake Dam | Dam | 166 | Lincoln | 38 59 54 N | 090 48 30 W |
| Wendt Lake Dam | Dam | 278 | Oregon | 36 32 36 N | 091 25 12 W |
| Wensler Lake Dam | Dam | 285 | Maries | 38 07 48 N | 091 40 37 W |
| Wentworth | Populated Place | 373 | Newton | 36 59 36 N | 094 04 28 W |
| Wentworth Country Club | Locale | 258 | Lafayette | 39 11 53 N | 093 51 58 W |
| Wentworth Military Academy | School | 263 | Lafayette | 39 11 13 N | 093 52 26 W |
| Wentzville | Populated Place | 190 | St. Charles | 38 48 41 N | 090 51 10 W |
| Wentzville Airport | Airport | 195 | St. Charles | 38 49 15 N | 090 50 05 W |
| Werfield Hollow | Valley | | Shannon | 37 08 41 N | 091 15 55 W |
| Werges Lake Dam | Dam | 234 | Montgomery | 38 58 54 N | 091 32 43 W |
| Wern Siding | Locale | 226 | Pulaski | 37 50 27 N | 092 04 39 W |
| Werners Sunset Lake | Reservoir | 156 | Ste. Genevieve | 38 02 36 N | 090 15 48 W |
| Werths Lake Dam | Dam | 225 | Lafayette | 38 57 12 N | 093 34 43 W |
| Wertz Lake | Reservoir | 213 | Pike | 39 19 42 N | 091 06 13 W |
| Wertz Lake Dam | Dam | 213 | Pike | 39 19 42 N | 091 06 13 W |
| Wesco | Populated Place | 264 | Crawford | 37 51 34 N | 091 25 56 W |
| Wesco Cemetery | Cemetery | 298 | Crawford | 37 50 58 N | 091 25 55 W |
| Wesley Cemetery | Cemetery | 358 | Greene | 37 19 34 N | 093 25 59 W |
| Wesley Chapel | Church | 250 | Cooper | 38 51 42 N | 092 55 23 W |
| Wesley Chapel | Church | 278 | Daviess | 39 49 48 N | 094 00 15 W |
| Wesley Chapel | Church | 256 | Johnson | 38 48 06 N | 094 02 51 W |
| Wesley Chapel | Church | 200 | Madison | 37 31 43 N | 090 23 00 W |
| Wesley Chapel | Church | 355 | Newton | 37 01 21 N | 094 13 27 W |
| Wesley Chapel | Church | 317 | Putnam | 40 32 50 N | 093 01 08 W |
| Wesley Chapel | Church | 276 | Ray | 39 28 27 N | 093 48 52 W |
| Wesley Chapel | Church | 154 | Wayne | 37 10 41 N | 090 19 31 W |
| Wesley Chapel (historical) | Church | 291 | St. Francois | 37 44 12 N | 090 17 40 W |
| Wesley Chapel Cemetery | Cemetery | 237 | Howard | 39 15 45 N | 092 41 03 W |
| Wesley Chapel Cemetery | Cemetery | 293 | St. Francois | 37 44 10 N | 090 17 38 W |