Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Marney Branch | Stream | | Moniteau | 38 32 51 N | 092 33 30 W |
| Marquand | Populated Place | 175 | Madison | 37 25 45 N | 090 10 05 W |
| Marquardt Dam | Dam | 261 | Vernon | 37 49 42 N | 094 18 01 W |
| Marquardt Lake | Reservoir | 261 | Vernon | 37 49 42 N | 094 18 01 W |
| Marques Hollow | Valley | | Iron | 37 41 19 N | 091 02 23 W |
| Marquette Cement Quarry and Plant | Mine | 123 | Cape Girardeau | 37 16 23 N | 089 32 20 W |
| Marquette Island | Island | 101 | Cape Girardeau | 37 15 41 N | 089 30 50 W |
| Marquette Lakes | Reservoir | 100 | Scott | 37 14 40 N | 089 31 36 W |
| Marquette Park | Park | 156 | St. Louis (city) | 38 34 59 N | 090 14 20 W |
| Marquette School | School | 108 | Cape Girardeau | 37 15 55 N | 089 32 57 W |
| Marquette School | School | 146 | St. Louis (city) | 38 38 27 N | 090 14 35 W |
| Marquis Dam | Dam | 211 | Bollinger | 37 16 30 N | 090 06 12 W |
| Marquis Lake | Reservoir | 211 | Bollinger | 37 16 30 N | 090 06 12 W |
| Marr Field Bar | Bar | 79 | New Madrid | 36 26 00 N | 089 33 00 W |
| Marr School | School | 214 | Monroe | 39 32 57 N | 091 55 32 W |
| Marrowbone Creek | Stream | | Daviess | 39 52 03 N | 093 56 28 W |
| Marryfield School (historical) | School | 253 | St. Clair | 38 08 50 N | 094 02 06 W |
| Mars Hill Cemetery | Cemetery | 403 | Barry | 36 52 29 N | 093 37 41 W |
| Mars Hill Church | Church | 405 | Barry | 36 52 29 N | 093 37 45 W |
| Mars Hill School (historical) | Locale | 405 | Barry | 36 52 32 N | 093 37 41 W |
| Marsh Cemetery | Cemetery | 81 | Dunklin | 36 13 06 N | 090 04 15 W |
| Marsh Creek | Populated Place | 160 | Madison | 37 25 02 N | 090 27 52 W |
| Marsh Creek | Stream | | Madison | 37 24 36 N | 090 27 58 W |
| Marsh Ford (historical) | Locale | 148 | Madison | 37 22 26 N | 090 27 16 W |
| Marsh Iron Mine | Mine | 259 | Crawford | 37 56 59 N | 091 23 25 W |
| Marsh Lake | Reservoir | 206 | Saline | 39 09 00 N | 093 08 55 W |
| Marsh Lake Dam | Dam | 206 | Saline | 39 09 00 N | 093 08 55 W |
| Marshall | Locale | 99 | Butler | 36 44 38 N | 090 14 49 W |
| Marshall | Populated Place | 233 | Saline | 39 07 23 N | 093 11 49 W |
| Marshall Branch | Stream | | Dade | 37 34 17 N | 093 56 04 W |
| Marshall Cemetery | Cemetery | 222 | Johnson | 38 52 30 N | 093 33 32 W |
| Marshall Cemetery | Cemetery | 281 | Ozark | 36 38 49 N | 092 10 05 W |
| Marshall Cemetery | Cemetery | 202 | Saline | 39 00 15 N | 093 01 54 W |
| Marshall Creek | Stream | | Henry | 38 17 00 N | 093 47 18 W |
| Marshall Creek | Stream | | Moniteau | 38 34 34 N | 092 31 37 W |
| Marshall Cummins Pond (historical) | Lake | 240 | Vernon | 37 55 31 N | 094 15 44 W |
| Marshall Diggs Wildlife Area Dam - North | Dam | 236 | Montgomery | 39 04 24 N | 091 37 55 W |
| Marshall Diggs Wildlife Area Lake | Reservoir | 236 | Montgomery | 39 04 24 N | 091 37 55 W |
| Marshall Eddy | Rapids | 95 | Butler | 36 41 18 N | 090 17 56 W |
| Marshall I Diggs State Wildlife Management A | Park | 232 | Montgomery | 39 03 59 N | 091 37 59 W |
| Marshall Junction | Populated Place | 240 | Saline | 38 57 29 N | 093 12 24 W |
| Marshall Junction State Wildlife Area | Park | 196 | Saline | 38 56 30 N | 093 15 25 W |
| Marshall Memorial Municipal Airport | Airport | 235 | Saline | 39 05 50 N | 093 12 11 W |
| Marshall School | School | 271 | Cass | 38 37 40 N | 094 09 18 W |
| Marshall School (historical) | School | 258 | Bates | 38 11 59 N | 094 14 01 W |
| Marshall School (historical) | School | 206 | Carroll | 39 18 23 N | 093 43 11 W |
| Marshall School (historical) | School | 269 | Lafayette | 39 09 20 N | 093 52 56 W |
| Marshall School (historical) | School | 231 | Macon | 39 37 54 N | 092 38 09 W |
| Marshall State Hospital | Hospital | 225 | Saline | 39 07 47 N | 093 10 50 W |
| Marshall State School | School | 226 | Saline | 39 07 47 N | 093 10 51 W |
| Marshall State School Lake | Reservoir | 215 | Saline | 39 07 54 N | 093 10 49 W |
| Marshall State School Lake Dam | Dam | 215 | Saline | 39 07 54 N | 093 10 49 W |
| Marshell Diggs Wildlife Area South Dam | Dam | 233 | Montgomery | 39 04 06 N | 091 37 49 W |
| Marshfield | Populated Place | 455 | Webster | 37 20 19 N | 092 54 26 W |
| Marshfield Ridge | Ridge | 427 | Christian | 36 59 22 N | 092 59 20 W |
| Marshfield Shopping Center | Locale | 445 | Webster | 37 20 29 N | 092 55 60 W |
| Marshfield Village Shopping Center | Locale | 445 | Webster | 37 20 28 N | 092 56 03 W |
| Marston | Populated Place | 89 | New Madrid | 36 31 08 N | 089 36 45 W |
| Mart Shopping Center | Locale | 187 | Cole | 38 34 48 N | 092 12 40 W |
| Martens Lake Dam | Dam | 258 | Bates | 38 23 42 N | 094 18 55 W |
| Martens School (historical) | School | 311 | Morgan | 38 30 14 N | 093 01 39 W |
| Martha (historical) | Locale | 190 | Reynolds | 37 16 02 N | 090 51 03 W |
| Martha Post Office (historical) | Post Office | 190 | Reynolds | 37 16 02 N | 090 51 03 W |
| Martha Washington School (historical) | School | 340 | Nodaway | 40 18 48 N | 094 51 18 W |
| Marthasville | Populated Place | 171 | Warren | 38 37 42 N | 091 03 28 W |
| Marthasville School | School | 181 | Warren | 38 37 39 N | 091 03 02 W |
| Marthasville Volunteer Fire Department | Locale | 153 | St. Charles | 38 36 32 N | 090 59 21 W |
| Marti Hollow | Valley | | Lawrence | 37 06 54 N | 093 58 04 W |
| Marti Lake | Reservoir | 298 | Barton | 37 24 30 N | 094 24 19 W |
| Marti Lake Dam | Dam | 298 | Barton | 37 24 30 N | 094 24 19 W |
| Marti Lake Dam | Dam | 239 | Callaway | 38 56 36 N | 091 46 37 W |
| Martien School (historical) | Locale | 268 | Callaway | 38 57 09 N | 091 57 41 W |
| Martigney Creek | Stream | | St. Louis | 38 29 03 N | 090 16 47 W |
| Martin Bluff | Cliff | 204 | Shannon | 37 10 42 N | 091 13 03 W |
| Martin Branch | Stream | | Cooper | 38 43 27 N | 092 38 60 W |
| Martin Branch | Stream | | Cooper | 38 56 20 N | 092 52 26 W |
| Martin Branch | Stream | | Franklin | 38 14 37 N | 091 19 58 W |
| Martin Branch | Stream | | Gentry | 40 22 59 N | 094 19 25 W |
| Martin Branch | Stream | | Pettis | 38 55 16 N | 093 29 38 W |
| Martin Cemetery | Cemetery | 272 | Cass | 38 32 31 N | 094 12 31 W |
| Martin Cemetery | Cemetery | 248 | Cedar | 37 53 37 N | 094 01 31 W |
| Martin Cemetery | Cemetery | 403 | Christian | 36 53 22 N | 093 17 50 W |
| Martin Cemetery | Cemetery | 374 | Christian | 37 01 59 N | 093 01 54 W |
| Martin Cemetery | Cemetery | 341 | Christian | 36 49 26 N | 092 55 51 W |
| Martin Cemetery | Cemetery | 251 | Crawford | 38 01 42 N | 091 25 08 W |
| Martin Cemetery | Cemetery | 291 | Crawford | 37 50 40 N | 091 15 11 W |
| Martin Cemetery | Cemetery | 245 | Franklin | 38 14 06 N | 091 20 16 W |
| Martin Cemetery | Cemetery | 260 | Grundy | 40 11 47 N | 093 35 41 W |
| Martin Cemetery | Cemetery | 244 | Lafayette | 39 07 50 N | 093 59 53 W |
| Martin Cemetery | Cemetery | 87 | New Madrid | 36 26 06 N | 089 37 43 W |
| Martin Cemetery | Cemetery | 198 | Ozark | 36 41 20 N | 092 16 15 W |
| Martin Cemetery | Cemetery | 348 | Platte | 39 31 28 N | 094 53 60 W |
| Martin Cemetery | Cemetery | 112 | Ripley | 36 35 22 N | 090 41 28 W |
| Martin Cemetery | Cemetery | 252 | Washington | 37 58 53 N | 090 53 39 W |
| Martin City | Populated Place | 272 | Jackson | 38 53 10 N | 094 35 25 W |
| Martin Creek | Stream | | Harrison | 40 15 45 N | 093 46 05 W |
| Martin Hill | Summit | 343 | Howell | 36 47 57 N | 092 04 47 W |
| Martin Hollow | Valley | | Dent | 37 38 48 N | 091 15 15 W |
| Martin Hollow | Valley | | Madison | 37 29 20 N | 090 12 29 W |
| Martin Hollow | Valley | | McDonald | 36 32 42 N | 094 13 36 W |
| Martin Hollow | Valley | | Perry | 37 37 12 N | 090 03 09 W |
| Martin Hollow | Valley | | Platte | 39 17 18 N | 094 48 33 W |
| Martin Hollow | Valley | | Shannon | 37 07 51 N | 091 09 34 W |
| Martin Hollow | Valley | | Shannon | 37 00 38 N | 091 15 53 W |
| Martin Lake | Reservoir | 256 | Randolph | 39 19 12 N | 092 21 01 W |
| Martin Lake Dam | Dam | 307 | Howell | 36 39 00 N | 091 49 49 W |
| Martin Lake Dam | Dam | 279 | Phelps | 37 56 54 N | 091 52 37 W |
| Martin Lake Dam | Dam | 256 | Randolph | 39 19 12 N | 092 21 01 W |
| Martin Lake Section 4 | Reservoir | 253 | Caldwell | 39 36 06 N | 093 49 13 W |
| Martin Lake Section 4 Dam | Dam | 253 | Caldwell | 39 36 06 N | 093 49 13 W |