Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Atkins Cemetery | Cemetery | 228 | Howard | 39 12 27 N | 092 32 42 W |
| Atkinson Cemetery | Cemetery | 87 | New Madrid | 36 26 01 N | 089 38 42 W |
| Atkinson Lake | Lake | 223 | St. Clair | 38 00 10 N | 094 03 26 W |
| Atkinson Lake Dam | Dam | 257 | Callaway | 38 56 18 N | 091 59 49 W |
| Atkinson Lake Dam | Dam | 262 | Callaway | 38 57 30 N | 091 58 55 W |
| Atkinson Lake Dam | Dam | 223 | St. Clair | 38 00 24 N | 094 02 49 W |
| Atkinson School | School | 259 | Callaway | 38 59 59 N | 091 58 05 W |
| Atkisson Lake Dam | Dam | 275 | Camden | 37 53 24 N | 092 29 01 W |
| Atlanta | Populated Place | 275 | Macon | 39 53 55 N | 092 28 52 W |
| Atlanta City Lake | Reservoir | 258 | Macon | 39 53 06 N | 092 29 13 W |
| Atlanta State Wildlife Area | Park | 267 | Macon | 39 52 41 N | 092 30 25 W |
| Atlas | Populated Place | 306 | Jasper | 37 05 42 N | 094 23 10 W |
| Atlas Church | Church | 318 | Jasper | 37 05 51 N | 094 23 16 W |
| Atlas School (historical) | School | 340 | Dallas | 37 45 03 N | 093 10 18 W |
| Atoka | Locale | 293 | Laclede | 37 43 56 N | 092 25 52 W |
| Atoka Post Office | Post Office | 293 | Laclede | 37 43 56 N | 092 25 52 W |
| Atteberry Cemetery | Cemetery | 265 | Grundy | 40 07 43 N | 093 32 41 W |
| Atteberry Cemetery | Cemetery | 409 | Webster | 37 27 00 N | 093 03 12 W |
| Attebery-Fort Cemetery | Cemetery | 322 | Crawford | 38 05 03 N | 091 31 12 W |
| Atterberry Cemetery | Cemetery | 263 | Callaway | 38 45 57 N | 091 39 38 W |
| Atterberry Cemetery | Cemetery | 232 | Monroe | 39 32 33 N | 092 10 23 W |
| Atterberry School (historical) | School | 274 | Macon | 39 53 34 N | 092 37 09 W |
| Attners Bluffs | Cliff | 239 | Morgan | 38 16 09 N | 093 02 33 W |
| Attucks School | School | 260 | Jackson | 39 05 26 N | 094 33 37 W |
| Atwell | Populated Place | 286 | Miller | 38 02 18 N | 092 12 46 W |
| Atwell Creek | Stream | | Miller | 38 03 47 N | 092 14 20 W |
| Atwell School (historical) | School | 275 | Miller | 38 02 18 N | 092 12 40 W |
| Atwood Lake Dam | Dam | 146 | Jefferson | 38 17 48 N | 090 27 30 W |
| Aubrey | Locale | 287 | Johnson | 38 40 05 N | 093 42 10 W |
| Aubrey Post Office (historical) | Post Office | 287 | Johnson | 38 40 05 N | 093 42 10 W |
| Auburn | Populated Place | 232 | Lincoln | 39 07 36 N | 090 58 26 W |
| Auburn Cemetery | Cemetery | 233 | Lincoln | 39 07 31 N | 090 58 30 W |
| Aud | Populated Place | 195 | Osage | 38 34 49 N | 091 43 15 W |
| Audrain Branch | Stream | | Franklin | 38 28 09 N | 091 06 38 W |
| Audrain County | Civil | 226 | Audrain | 39 13 00 N | 091 52 01 W |
| Audrain Prairies | Area | 238 | Adair | 38 44 59 N | 092 07 32 W |
| Auglaize Cemetery | Cemetery | 246 | Camden | 38 05 53 N | 092 36 01 W |
| August A Busch Lake Number 15 | Reservoir | 180 | St. Charles | 38 43 12 N | 090 45 24 W |
| August A Busch Lake Number 15 Dam | Dam | 180 | St. Charles | 38 43 12 N | 090 45 24 W |
| August A Busch Lake Number 16 | Reservoir | 182 | St. Charles | 38 42 30 N | 090 44 30 W |
| August A Busch Lake Number 16 Dam | Dam | 182 | St. Charles | 38 42 30 N | 090 44 30 W |
| August A Busch Lake Number 40 Dam | Dam | 156 | St. Charles | 38 43 36 N | 090 44 00 W |
| August A Busch Lake Number 51 Dam | Dam | 174 | St. Charles | 38 42 30 N | 090 43 54 W |
| August A Busch Lake Number 570 Dam | Dam | 180 | St. Charles | 38 43 06 N | 090 45 12 W |
| August A Busch Lake Number 6 | Reservoir | 194 | St. Charles | 38 42 24 N | 090 46 00 W |
| August A Busch Lake Number 6 Dam | Dam | 194 | St. Charles | 38 42 24 N | 090 46 00 W |
| August A Busch Lake Number 600 Dam | Dam | 180 | St. Charles | 38 42 36 N | 090 47 30 W |
| August A Busch Lake Number 7 | Reservoir | 207 | St. Charles | 38 42 00 N | 090 47 06 W |
| August A Busch Lake Number 7 Dam | Dam | 207 | St. Charles | 38 42 00 N | 090 47 06 W |
| August A Busch Lake Number 8 | Reservoir | 170 | St. Charles | 38 43 06 N | 090 47 36 W |
| August A Busch Lake Number 8 Dam | Dam | 170 | St. Charles | 38 43 06 N | 090 47 36 W |
| August A Busch Memorial Wildlife Area | Park | 185 | St. Charles | 38 43 06 N | 090 45 20 W |
| August H Fenck Senior Dam | Dam | 263 | Audrain | 39 06 42 N | 091 59 31 W |
| August H Fenck Senior Lake | Reservoir | 263 | Audrain | 39 06 42 N | 091 59 31 W |
| Augusta | Locale | 152 | Lewis | 40 14 52 N | 091 32 30 W |
| Augusta | Populated Place | 171 | St. Charles | 38 34 21 N | 090 52 55 W |
| Augusta Cemetery | Cemetery | 232 | Callaway | 38 59 18 N | 091 42 42 W |
| Augusta Church (historical) | Church | 227 | Callaway | 38 59 15 N | 091 42 36 W |
| Augusta Elementary School | School | 187 | St. Charles | 38 34 47 N | 090 52 38 W |
| Augusta Post Office | Post Office | 170 | St. Charles | 38 34 21 N | 090 52 57 W |
| Augusta School | School | 158 | Lewis | 40 14 56 N | 091 32 38 W |
| Augusta Volunteer Fire Department Bldg Number 1 | Building | 173 | St. Charles | 38 34 23 N | 090 52 59 W |
| Aullville | Populated Place | 222 | Lafayette | 39 01 04 N | 093 40 41 W |
| Aulsbury Chapel | Church | 261 | St. Francois | 37 56 36 N | 090 24 02 W |
| Aunt Cindy Spring | Spring | 293 | Howell | 36 32 33 N | 091 54 47 W |
| Aunt Pop Cemetery | Cemetery | 252 | Crawford | 38 11 02 N | 091 25 21 W |
| Aunt Sal Hollow | Valley | | Shannon | 37 23 12 N | 091 19 24 W |
| Aunts Creek | Stream | | Stone | 36 38 53 N | 093 28 57 W |
| Aunts Creek Park | Park | 304 | Stone | 36 40 25 N | 093 27 36 W |
| Aunts Creek Public Use Area | Park | 300 | Stone | 36 40 24 N | 093 27 37 W |
| Aurora | Populated Place | 427 | Lawrence | 36 58 15 N | 093 43 05 W |
| Aurora Country Club | Locale | 383 | Lawrence | 37 03 10 N | 093 43 01 W |
| Aurora High School | School | 269 | Moniteau | 38 37 54 N | 092 34 05 W |
| Aurora Memorial Municipal Airport | Airport | 433 | Lawrence | 36 57 40 N | 093 41 46 W |
| Aurora School | School | 260 | Henry | 38 20 42 N | 094 03 10 W |
| Aurora Springs | Populated Place | 274 | Miller | 38 19 29 N | 092 35 07 W |
| Ausbin Creek | Stream | | Franklin | 38 20 46 N | 091 14 51 W |
| Ausburns Lake Dam | Dam | 208 | Boone | 39 00 00 N | 092 20 37 W |
| Austin | Populated Place | 273 | Cass | 38 30 10 N | 094 17 60 W |
| Austin | Populated Place | 79 | Dunklin | 36 09 39 N | 090 09 33 W |
| Austin Cemetery | Cemetery | 207 | Carroll | 39 16 38 N | 093 35 12 W |
| Austin Cemetery | Cemetery | 268 | Cass | 38 29 36 N | 094 17 04 W |
| Austin Community Lake | Reservoir | 444 | Texas | 37 09 42 N | 092 11 07 W |
| Austin Community Lake Dam | Dam | 444 | Texas | 37 09 42 N | 092 11 07 W |
| Austin Harrison Dam | Dam | 306 | Newton | 36 53 48 N | 094 32 01 W |
| Austin Harrison Reservoir | Reservoir | 306 | Newton | 36 53 48 N | 094 32 01 W |
| Austin Hollow | Valley | | Douglas | 36 53 55 N | 092 22 48 W |
| Austin School | School | 272 | Cass | 38 30 10 N | 094 17 47 W |
| Austin School | School | 79 | Dunklin | 36 09 45 N | 090 09 29 W |
| Austin School (historical) | School | 229 | Carroll | 39 25 06 N | 093 35 01 W |
| Austin Survey | Area | 274 | Washington | 37 57 18 N | 090 48 00 W |
| Austin Switch | Locale | 99 | Scott | 36 58 07 N | 089 27 11 W |
| Austria (historical) | Populated Place | 348 | Phelps | 37 50 58 N | 091 33 18 W |
| Authur Cemetery | Cemetery | 208 | Pike | 39 28 17 N | 091 11 50 W |
| Autumn Hill State School | School | 209 | Franklin | 38 26 56 N | 091 01 28 W |
| Autumn Lake | Reservoir | 224 | Camden | 38 12 24 N | 092 42 55 W |
| Autumn Lake Dam | Dam | 224 | Camden | 38 12 24 N | 092 42 55 W |
| Auwarter Lake | Reservoir | 230 | Ralls | 39 20 12 N | 091 35 37 W |
| Auxvasse | Populated Place | 265 | Callaway | 39 01 05 N | 091 53 50 W |
| Auxvasse Cemetery | Cemetery | 260 | Callaway | 39 00 09 N | 091 53 55 W |
| Auxvasse Creek | Stream | | Callaway | 38 40 55 N | 091 49 23 W |
| Ava | Populated Place | 391 | Douglas | 36 57 07 N | 092 39 38 W |
| Ava Ranger District | Forest | 337 | Taney | 36 45 10 N | 092 53 01 W |
| Avalon | Populated Place | 258 | Livingston | 39 39 33 N | 093 26 30 W |
| Avalon Cemetery | Cemetery | 254 | Livingston | 39 39 08 N | 093 26 25 W |
| Avalon Park | Populated Place | 367 | Greene | 37 19 34 N | 093 15 46 W |
| Avenue City | Populated Place | 272 | Andrew | 39 51 48 N | 094 45 26 W |
| Averill Cemetery | Cemetery | 85 | Pemiscot | 36 17 56 N | 089 41 37 W |
| Avert | Populated Place | 101 | Stoddard | 36 55 46 N | 089 50 52 W |
| Avery | Populated Place | 243 | Benton | 38 04 04 N | 093 21 37 W |