Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Maple Grove Cemetery | Cemetery | 310 | Marion | 39 28 40 N | 080 07 28 W |
| Marion County | Civil | 321 | Marion | 39 31 00 N | 080 14 59 W |
| Marion County Courthouse | Church | 308 | Marion | 39 29 06 N | 080 08 36 W |
| Marion County Public Library | Building | 295 | Marion | 39 29 06 N | 080 08 41 W |
| Marion County Technical Center | School | | Marion | 39 30 41 N | 080 18 07 W |
| Martin Cemetery | Cemetery | 299 | Marion | 39 25 24 N | 080 12 23 W |
| Marvin Chapel | Church | 290 | Marion | 39 34 03 N | 080 09 01 W |
| Mary Lou Retton Park | Park | 315 | Marion | 39 27 37 N | 080 11 14 W |
| Masgrove Spring | Spring | 297 | Marion | 39 32 37 N | 080 07 10 W |
| Mason Chapel | Church | 309 | Marion | 39 27 59 N | 080 24 28 W |
| McClellan | Populated Place | 337 | Marion | 39 33 13 N | 080 17 06 W |
| Meadowdale | Populated Place | 276 | Marion | 39 29 44 N | 080 05 35 W |
| Meadowdale School (historical) | School | 297 | Marion | 39 29 28 N | 080 05 38 W |
| Meredith Spring | Spring | 331 | Marion | 39 29 42 N | 080 06 11 W |
| Messer Run | Stream | | Marion | 39 35 38 N | 080 22 06 W |
| Methodist Temple | Church | 303 | Marion | 39 29 03 N | 080 08 37 W |
| Metz | Populated Place | 314 | Marion | 39 34 49 N | 080 22 11 W |
| Metz Post Office | Post Office | 318 | Marion | 39 34 45 N | 080 22 06 W |
| Metz School (historical) | School | 318 | Marion | 39 32 33 N | 080 25 33 W |
| Meyers Cemetery | Cemetery | 377 | Marion | 39 34 19 N | 080 17 43 W |
| Meyers Church | Church | 339 | Marion | 39 34 13 N | 080 17 22 W |
| Michael Spring | Spring | 302 | Marion | 39 29 39 N | 080 09 51 W |
| Middletown | Locale | 295 | Marion | 39 26 31 N | 080 15 19 W |
| Middletown Magisterial District | Civil | 284 | Marion | 39 30 09 N | 080 10 28 W |
| Middletown Mall Shopping Center | Locale | 354 | Marion | 39 25 41 N | 080 11 09 W |
| Miles Chapel Methodist Church | Church | 322 | Marion | 39 29 15 N | 080 08 44 W |
| Mill Fall Run | Stream | | Marion | 39 27 58 N | 080 12 46 W |
| Miller Junior High School | School | 324 | Marion | 39 29 21 N | 080 08 30 W |
| Millersville | Populated Place | 331 | Marion | 39 27 40 N | 080 08 53 W |
| Million Dollar Bridge | Bridge | 266 | Marion | 39 28 56 N | 080 08 26 W |
| Mine Number Nine Slurry Impoundment | Reservoir | 339 | Marion | 39 32 18 N | 080 14 53 W |
| Ministers Cemetery | Cemetery | 317 | Marion | 39 33 07 N | 080 08 31 W |
| Ministers Run | Stream | | Marion | 39 33 29 N | 080 08 37 W |
| Mission Farm | Locale | 436 | Marion | 39 24 20 N | 080 02 34 W |
| Mod Run | Stream | | Marion | 39 31 08 N | 080 18 23 W |
| Mod Run Impoundment Dam | Dam | 419 | Marion | 39 33 00 N | 080 17 59 W |
| Mod Run School (historical) | School | 345 | Marion | 39 33 19 N | 080 18 11 W |
| Mod Run Slurry Pond | Reservoir | 419 | Marion | 39 33 00 N | 080 17 59 W |
| Monongah | Populated Place | 289 | Marion | 39 27 45 N | 080 13 05 W |
| Monongah Baptist Church | Church | 295 | Marion | 39 27 41 N | 080 12 38 W |
| Monongah Elementary School | School | 297 | Marion | 39 27 51 N | 080 13 19 W |
| Monongah Middle School | School | 293 | Marion | 39 27 44 N | 080 13 05 W |
| Monongalia Church | Church | 328 | Marion | 39 33 14 N | 080 17 05 W |
| Montana | Populated Place | 308 | Marion | 39 31 24 N | 080 06 34 W |
| Montana Mines Post Office | Post Office | 296 | Marion | 39 31 37 N | 080 06 32 W |
| Montana Mines Spring | Spring | 289 | Marion | 39 31 42 N | 080 06 31 W |
| Montana United Methodist Church | Church | 305 | Marion | 39 31 32 N | 080 06 39 W |
| Monumental Church | Church | 322 | Marion | 39 31 48 N | 080 10 42 W |
| Moody Run | Stream | | Marion | 39 29 55 N | 080 11 02 W |
| Moran School (historical) | School | 518 | Marion | 39 27 13 N | 079 58 50 W |
| Morgan Chapel | Church | 364 | Marion | 39 32 43 N | 080 05 50 W |
| Morganland Chapel | Church | 320 | Marion | 39 31 51 N | 080 05 37 W |
| Morningstar Baptist Church | Church | 296 | Marion | 39 29 32 N | 080 08 33 W |
| Morris Park | Park | 385 | Marion | 39 27 31 N | 080 08 08 W |
| Morrow Hall | Building | 339 | Marion | 39 29 03 N | 080 09 37 W |
| Mount Calvary Cemetery | Cemetery | 312 | Marion | 39 27 37 N | 080 13 24 W |
| Mount Carmel Cemetery | Cemetery | 330 | Marion | 39 30 02 N | 080 09 04 W |
| Mount Clair School | School | 468 | Marion | 39 27 46 N | 080 02 27 W |
| Mount Harmony | Populated Place | 338 | Marion | 39 30 35 N | 080 04 40 W |
| Mount Harmony Community Church | Church | 323 | Marion | 39 30 36 N | 080 04 23 W |
| Mount Nebo Church | Church | 493 | Marion | 39 27 49 N | 080 00 32 W |
| Mount Nebo School | School | 500 | Marion | 39 27 34 N | 080 00 41 W |
| Mount Sharon Church | Church | 422 | Marion | 39 28 42 N | 080 02 51 W |
| Mount Zion Baptist Church | Church | 299 | Marion | 39 29 11 N | 080 08 50 W |
| Mount Zion Church | Church | 409 | Marion | 39 29 14 N | 080 02 43 W |
| Mudlick Run | Stream | | Marion | 39 26 31 N | 080 02 39 W |
| Mudlick School (historical) | School | 351 | Marion | 39 26 37 N | 080 02 12 W |
| Murray Cemetery | Cemetery | 404 | Marion | 39 34 44 N | 080 26 06 W |
| Murray School (historical) | School | 343 | Marion | 39 34 52 N | 080 26 12 W |
| Nain Church | Church | 357 | Marion | 39 25 34 N | 080 06 36 W |
| Nams Run | Stream | | Marion | 39 34 20 N | 080 12 52 W |
| Neel (historical) | Populated Place | 534 | Marion | 39 25 40 N | 080 00 02 W |
| Neely Hollow | Valley | | Marion | 39 28 57 N | 080 24 50 W |
| New England | Populated Place | 320 | Marion | 39 27 41 N | 080 10 14 W |
| New Testament Fellowship Church | Church | 273 | Marion | 39 27 33 N | 080 12 37 W |
| Nixon Cemetery | Cemetery | 392 | Marion | 39 24 22 N | 080 10 28 W |
| Nixon School (historical) | School | 398 | Marion | 39 24 18 N | 080 10 46 W |
| North Fork River Run | Stream | | Marion | 39 24 03 N | 080 08 13 W |
| North Hall | Building | 343 | Marion | 39 29 06 N | 080 09 39 W |
| North Marion High School | School | 306 | Marion | 39 30 43 N | 080 18 03 W |
| Norway | Populated Place | 271 | Marion | 39 28 14 N | 080 11 11 W |
| Norwood (subdivision) | Populated Place | 315 | Marion | 39 29 37 N | 080 06 32 W |
| Norwood Methodist Episcopal Church (historical) | Church | 314 | Marion | 39 29 35 N | 080 06 34 W |
| Nuzum Cemetery | Cemetery | 394 | Marion | 39 25 10 N | 080 06 37 W |
| Oak Grove (historical) | Populated Place | 392 | Marion | 39 26 48 N | 080 17 33 W |
| Odell Knob Church | Church | 444 | Marion | 39 26 31 N | 080 20 00 W |
| Old School Church (historical) | Church | 465 | Marion | 39 24 46 N | 080 03 14 W |
| Otter Run | Stream | | Marion | 39 27 36 N | 080 03 49 W |
| Owen Davy Fork | Stream | | Marion | 39 31 09 N | 080 25 13 W |
| Palatine | Populated Place | 308 | Marion | 39 28 45 N | 080 08 14 W |
| Palatine Baptist Church (historical) | Church | 298 | Marion | 39 28 48 N | 080 08 14 W |
| Palatine Magisterial District | Civil | 321 | Marion | 39 27 03 N | 080 06 08 W |
| Panther Lick Run | Stream | | Marion | 39 33 27 N | 080 11 02 W |
| Parker Cemetery | Cemetery | 370 | Marion | 39 34 31 N | 080 16 06 W |
| Parker Run | Stream | | Marion | 39 31 49 N | 080 06 11 W |
| Parrish Cemetery | Cemetery | 361 | Marion | 39 29 03 N | 080 17 24 W |
| Parrish Run | Stream | | Marion | 39 28 13 N | 080 17 16 W |
| Paw Paw | Populated Place | 274 | Marion | 39 32 55 N | 080 09 11 W |
| Paw Paw Creek | Stream | | Marion | 39 31 46 N | 080 07 16 W |
| Pentecostal Church (historical) | Church | 263 | Marion | 39 31 48 N | 080 07 09 W |
| Peter Johnson Run | Stream | | Marion | 39 27 02 N | 080 02 48 W |
| Pettyjohn (historical) | Populated Place | 296 | Marion | 39 28 00 N | 080 09 14 W |
| Pharaoh Run | Stream | | Marion | 39 31 45 N | 080 06 59 W |
| Pharaoh Run School (historical) | School | 327 | Marion | 39 33 27 N | 080 07 12 W |
| Pine Grove | Populated Place | 279 | Marion | 39 30 00 N | 080 11 46 W |
| Piney Run | Stream | | Marion | 39 28 07 N | 080 04 19 W |
| Pitcher Cemetery | Cemetery | 273 | Marion | 39 31 01 N | 080 08 06 W |
| Pitcher United Methodist Church | Church | 274 | Marion | 39 31 00 N | 080 08 06 W |
| Pleasant Hill Church | Church | 391 | Marion | 39 25 09 N | 080 06 41 W |
| Pleasant Point School (historical) | School | 305 | Marion | 39 33 29 N | 080 10 52 W |