Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Mallego Brook | Stream | | Strafford | 43 11 58 N | 070 57 01 W |
| Mallego Plains | Flat | 44 | Strafford | 43 12 35 N | 070 57 16 W |
| Mammoth Green Golf Driving Range | Locale | 80 | Rockingham | 42 50 34 N | 071 21 48 W |
| Manchester | Populated Place | 79 | Hillsborough | 42 59 44 N | 071 27 17 W |
| Manchester Alliance Church | Church | 81 | Hillsborough | 42 59 20 N | 071 26 46 W |
| Manchester Baptist Church | Church | 94 | Hillsborough | 42 59 44 N | 071 24 16 W |
| Manchester Bible Church | Church | 75 | Hillsborough | 42 59 08 N | 071 26 45 W |
| Manchester Center Cemetery | Cemetery | 102 | Hillsborough | 42 58 29 N | 071 25 30 W |
| Manchester Central High School | School | 75 | Hillsborough | 42 59 36 N | 071 27 20 W |
| Manchester City Hall | Building | 62 | Hillsborough | 42 59 33 N | 071 27 49 W |
| Manchester City Library | Building | 74 | Hillsborough | 42 59 36 N | 071 27 30 W |
| Manchester Country Club | Locale | 61 | Hillsborough | 42 56 47 N | 071 28 40 W |
| Manchester Historic Association Building | Building | 70 | Hillsborough | 42 59 28 N | 071 27 33 W |
| Manchester Historic Association Library | Building | 70 | Hillsborough | 42 59 28 N | 071 27 33 W |
| Manchester Institute of Arts and Sciences (historical) | School | 71 | Hillsborough | 42 59 28 N | 071 27 28 W |
| Manchester Memorial High School | School | 96 | Hillsborough | 42 58 03 N | 071 26 03 W |
| Manchester Speedway | Locale | 89 | Rockingham | 42 55 14 N | 071 24 54 W |
| Manchester West High School | School | 57 | Hillsborough | 42 59 12 N | 071 28 29 W |
| Manchester-Grenier Industrial Airpark | Airport | 69 | Hillsborough | 42 56 00 N | 071 26 13 W |
| Manfeltree Brook | Stream | | Grafton | 43 34 35 N | 071 58 36 W |
| Mann Hill | Summit | 645 | Grafton | 44 21 16 N | 071 44 24 W |
| Manning Lake | Lake | 219 | Belknap | 43 28 38 N | 071 20 27 W |
| Manning Trail | Trail | 497 | Grafton | 43 39 14 N | 071 52 53 W |
| Manson Hill | Summit | 446 | Carroll | 43 53 18 N | 071 02 59 W |
| Maple Acres (subdivision) | Populated Place | 160 | Cheshire | 42 57 32 N | 072 19 02 W |
| Maple Avenue Cemetery | Cemetery | 250 | Hillsborough | 43 07 04 N | 071 57 18 W |
| Maple Avenue School | School | 94 | Hillsborough | 43 01 16 N | 071 35 48 W |
| Maple Avenue School | School | 164 | Sullivan | 43 21 52 N | 072 22 13 W |
| Maple Cottage School | School | 204 | Grafton | 43 51 47 N | 071 38 05 W |
| Maple Falls Brook | Stream | | Rockingham | 43 01 40 N | 071 21 28 W |
| Maple Grove Cemetery | Cemetery | 189 | Merrimack | 43 20 47 N | 071 30 31 W |
| Maple Grove Cemetery | Cemetery | 103 | Merrimack | 43 15 05 N | 071 34 19 W |
| Maple Grove School (historical) | School | 382 | Grafton | 43 55 13 N | 071 54 28 W |
| Maple Leaf Golf Course | Locale | 277 | Merrimack | 43 22 13 N | 071 57 52 W |
| Maple Mountain | Summit | 784 | Carroll | 44 09 52 N | 071 16 36 W |
| Maple Ridge | Ridge | 345 | Carroll | 43 51 29 N | 071 25 34 W |
| Maple Street Cemetery | Cemetery | 273 | Sullivan | 43 21 43 N | 072 09 55 W |
| Maple Street Elementary School | School | 134 | Merrimack | 43 13 00 N | 071 42 46 W |
| Maple Street School | School | 70 | Strafford | 43 18 14 N | 070 59 01 W |
| Maplehaven | Populated Place | 19 | Rockingham | 43 01 38 N | 070 47 49 W |
| Mapleton | Populated Place | 280 | Coos | 44 38 55 N | 071 33 08 W |
| Maplewood | Populated Place | 446 | Grafton | 44 16 55 N | 071 39 26 W |
| Maplewood Cemetery | Cemetery | 202 | Hillsborough | 43 02 20 N | 071 56 04 W |
| Maplewood Cemetery | Cemetery | 128 | Merrimack | 43 19 33 N | 071 39 04 W |
| Maplewood Cemetery | Cemetery | 244 | Merrimack | 43 22 36 N | 071 42 23 W |
| Maplewood Elementary School | School | 69 | Strafford | 43 15 04 N | 070 52 47 W |
| Maranatha Assembly of God Church | Church | 19 | Rockingham | 42 56 27 N | 070 50 03 W |
| March Hill | Summit | 457 | Merrimack | 43 29 47 N | 071 47 55 W |
| March Pond | Lake | 342 | Merrimack | 43 29 51 N | 071 48 20 W |
| Marchs Pond | Lake | 267 | Strafford | 43 27 47 N | 071 07 47 W |
| Marchs Pond Dam | Dam | 269 | Strafford | 43 27 48 N | 071 07 52 W |
| Marcy Hill | Summit | 282 | Cheshire | 42 52 31 N | 072 14 50 W |
| Marden Brook | Stream | | Merrimack | 43 12 11 N | 071 22 56 W |
| Mardens Hill | Summit | 125 | Rockingham | 42 58 33 N | 071 13 25 W |
| Marienfeld Camp | Locale | 450 | Cheshire | 42 57 37 N | 072 09 31 W |
| Mark Island | Island | 181 | Belknap | 43 37 25 N | 071 23 47 W |
| Mark Wentworth House | Building | 6 | Rockingham | 43 04 25 N | 070 45 11 W |
| Market Basket Plaza Shopping Center | Locale | 74 | Strafford | 43 20 25 N | 070 58 28 W |
| Market Square | Park | 6 | Rockingham | 43 04 37 N | 070 45 28 W |
| Marlboro Post Office | Post Office | 215 | Cheshire | 42 54 24 N | 072 12 39 W |
| Marlboro Trail | Trail | 521 | Cheshire | 42 51 39 N | 072 07 42 W |
| Marlborough | Populated Place | 215 | Cheshire | 42 54 15 N | 072 12 28 W |
| Marlborough Elementary School | School | 221 | Cheshire | 42 54 15 N | 072 12 43 W |
| Marlborough Town Hall | Building | 215 | Cheshire | 42 54 18 N | 072 12 34 W |
| Marlow | Populated Place | 354 | Cheshire | 43 06 57 N | 072 11 49 W |
| Marlow Hill | Summit | 491 | Cheshire | 43 08 30 N | 072 12 54 W |
| Marlow Junction | Populated Place | 398 | Cheshire | 43 10 02 N | 072 13 11 W |
| Marlow United Methodist Church | Church | 357 | Cheshire | 43 06 59 N | 072 11 58 W |
| Marsh Brook | Stream | | Carroll | 44 11 17 N | 071 11 40 W |
| Marsh Brook | Stream | | Rockingham | 43 00 40 N | 070 51 11 W |
| Marsh Pond | Lake | 183 | Belknap | 43 27 29 N | 071 10 58 W |
| Marsh Pond | Lake | 152 | Merrimack | 43 14 42 N | 071 23 47 W |
| Marsh Road Pond | Lake | 5 | Rockingham | 43 02 02 N | 070 43 58 W |
| Marsh Tavern (historical) | Building | 48 | Hillsborough | 42 45 12 N | 071 27 43 W |
| Marshall Brook | Stream | | Grafton | 43 43 31 N | 072 05 46 W |
| Marshall Cemetery | Cemetery | 201 | Merrimack | 43 15 22 N | 071 56 13 W |
| Marshall Corner | Populated Place | 39 | Rockingham | 42 59 33 N | 071 00 51 W |
| Marshall Hill | Summit | 548 | Coos | 44 50 33 N | 071 25 53 W |
| Marshall Pond | Reservoir | 494 | Sullivan | 43 18 59 N | 072 16 15 W |
| Marshall Pond Dam | Dam | 494 | Sullivan | 43 18 59 N | 072 16 15 W |
| Marshall State Forest | Park | 362 | Hillsborough | 42 44 23 N | 071 49 29 W |
| Marshfield Station | Populated Place | 769 | Coos | 44 16 09 N | 071 21 24 W |
| Marston Hill | Summit | 449 | Grafton | 43 57 00 N | 071 55 27 W |
| Marston Pond Dam | Dam | 44 | Rockingham | 43 07 12 N | 071 02 58 W |
| Marston School | School | 329 | Coos | 44 28 32 N | 071 11 00 W |
| Marston School | School | 21 | Rockingham | 42 56 24 N | 070 49 40 W |
| Martin | Populated Place | 54 | Merrimack | 43 02 36 N | 071 27 15 W |
| Martin Brook | Stream | | Cheshire | 42 50 52 N | 072 16 41 W |
| Martin Brook | Stream | | Grafton | 43 35 55 N | 072 18 13 W |
| Martin Cemetery | Cemetery | 80 | Merrimack | 43 02 47 N | 071 26 45 W |
| Martin Crossing | Populated Place | 45 | Rockingham | 43 01 15 N | 071 05 09 W |
| Martin Hill | Summit | 82 | Rockingham | 42 54 59 N | 070 58 32 W |
| Martin Meadow Pond | Lake | 326 | Coos | 44 26 33 N | 071 36 20 W |
| Martin School | School | 156 | Merrimack | 43 11 21 N | 071 40 18 W |
| Martineau Park | Park | 48 | Hillsborough | 42 59 10 N | 071 28 22 W |
| Martins Brook | Stream | | Coos | 44 19 39 N | 071 02 35 W |
| Martins Brook | Stream | | Grafton | 43 53 10 N | 071 54 03 W |
| Martins Corner | Populated Place | 98 | Merrimack | 43 02 53 N | 071 25 56 W |
| Martins Location | Civil | 367 | Coos | 44 19 43 N | 071 12 50 W |
| Marvin Hill | Summit | 432 | Cheshire | 43 03 20 N | 072 20 50 W |
| Mary A Fisk Elementary School | School | 46 | Rockingham | 42 46 53 N | 071 14 15 W |
| Mary C Dondero Elementary School | School | 14 | Rockingham | 43 02 17 N | 070 46 06 W |
| Mary D Haddad Memorial Bandstand | Building | 403 | Merrimack | 43 24 48 N | 071 58 53 W |
| Mary E Bartlett Memorial Library | Building | 44 | Rockingham | 42 58 49 N | 071 04 21 W |
| Mary Mother of the Church Roman Catholic Church | Church | 49 | Rockingham | 42 52 24 N | 071 01 24 W |
| Mary Queen of Peace Church | Church | 35 | Rockingham | 42 45 29 N | 071 12 02 W |
| Mascenic Regional High School | School | 331 | Hillsborough | 42 44 36 N | 071 49 01 W |
| Mascoma | Populated Place | 247 | Grafton | 43 39 04 N | 072 10 56 W |
| Mascoma Lake | Reservoir | 231 | Grafton | 43 38 55 N | 072 10 53 W |
| Mascoma Lake Dam | Dam | 231 | Grafton | 43 38 55 N | 072 10 53 W |