| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Ma-ababaca | city | Province of Ilocos Norte | Philippines | 18.1833333 | 120.7166667 | 118 | 14255 |
| Maababucay | city | Province of Ilocos Norte | Philippines | 18.1666667 | 120.7666667 | 180 | 12676 |
| Maananteng | city | Province of Ilocos Norte | Philippines | 18.1055556 | 120.795 | 259 | 17649 |
| Maanateng | city | Province of Ilocos Norte | Philippines | 18.1055556 | 120.795 | 259 | 17649 |
| Mababoa | city | Province of Ilocos Norte | Philippines | 18.6288889 | 120.8580556 | 45 | 3757 |
| Mabisbis | city | Province of Ilocos Norte | Philippines | 18.1833333 | 120.65 | 137 | 54424 |
| Mabubua | city | Province of Ilocos Norte | Philippines | 18.6288889 | 120.8580556 | 45 | 3757 |
| Mabusag | city | Province of Ilocos Norte | Philippines | 17.9336111 | 120.5080556 | 82 | 31568 |
| Mabusan | city | Province of Ilocos Norte | Philippines | 17.9336111 | 120.5080556 | 82 | 31568 |
| Macayepyep | city | Province of Ilocos Norte | Philippines | 17.9341667 | 120.6575 | 278 | 20132 |
| Macupit | city | Province of Ilocos Norte | Philippines | 18.3 | 120.6333333 | 144 | 22887 |
| Madupayas | city | Province of Ilocos Norte | Philippines | 17.9166667 | 120.55 | 285 | 27751 |
| Madupayas | city | Province of Ilocos Norte | Philippines | 18.1333333 | 120.7 | 127 | 33685 |
| Magababa | city | Province of Ilocos Norte | Philippines | 18.2638889 | 120.6805556 | 124 | 15056 |
| Maglabacan | city | Province of Ilocos Norte | Philippines | 18.1333333 | 120.5 | 0 | 49721 |
| Maglaoi | city | Province of Ilocos Norte | Philippines | 17.9833333 | 120.4833333 | 36 | 15895 |
| Magnuang | city | Province of Ilocos Norte | Philippines | 18.0208333 | 120.5361111 | 147 | 31628 |
| Magnwang | city | Province of Ilocos Norte | Philippines | 18.0208333 | 120.5361111 | 147 | 31628 |
| Malampa | city | Province of Ilocos Norte | Philippines | 18.2666667 | 120.65 | 147 | 30795 |
| Maligligay | city | Province of Ilocos Norte | Philippines | 18.5 | 120.9166667 | 1394 | 5145 |
| Malingay | city | Province of Ilocos Norte | Philippines | 18.6225 | 120.8447222 | 164 | 8068 |
| Malingeb | city | Province of Ilocos Norte | Philippines | 18.1666667 | 120.6 | 104 | 84979 |
| Manalpac | city | Province of Ilocos Norte | Philippines | 18.1 | 120.8 | 298 | 17649 |
| Manarang | city | Province of Ilocos Norte | Philippines | 18.2833333 | 120.65 | 190 | 30795 |
| Mandaloque | city | Province of Ilocos Norte | Philippines | 18.1166667 | 120.7 | 111 | 36276 |
| Mangitayag | city | Province of Ilocos Norte | Philippines | 18.15 | 120.7 | 131 | 33685 |
| Mangngato | city | Province of Ilocos Norte | Philippines | 18.1666667 | 120.5333333 | 78 | 46413 |
| Mangñgato | city | Province of Ilocos Norte | Philippines | 18.1666667 | 120.5333333 | 78 | 46413 |
| Mao-oay | city | Province of Ilocos Norte | Philippines | 18.4569444 | 120.7141667 | 498 | 12765 |
| Maoin | city | Province of Ilocos Norte | Philippines | 18.5333333 | 120.8166667 | 147 | 9933 |
| Maraseda | city | Province of Ilocos Norte | Philippines | 18.4636111 | 120.6555556 | 495 | 9874 |
| Marcos | city | Province of Ilocos Norte | Philippines | 18.0533333 | 120.6875 | 154 | 37521 |
| Margaay | city | Province of Ilocos Norte | Philippines | 18.2166667 | 120.65 | 262 | 48322 |
| Mariquet | city | Province of Ilocos Norte | Philippines | 18.1 | 120.7833333 | 223 | 23112 |
| Marong | city | Province of Ilocos Norte | Philippines | 17.9166667 | 120.4666667 | 144 | 25698 |
| Maruaya | city | Province of Ilocos Norte | Philippines | 18.1833333 | 120.75 | 193 | 12676 |
| Masintoc | city | Province of Ilocos Norte | Philippines | 18.0780556 | 120.4838889 | 13 | 16952 |
| Masiquil | city | Province of Ilocos Norte | Philippines | 18.5241667 | 120.7477778 | 328 | 9117 |
| Masiquit | city | Province of Ilocos Norte | Philippines | 18.5241667 | 120.7477778 | 328 | 9117 |
| Maslang | city | Province of Ilocos Norte | Philippines | 18.3977778 | 120.6341667 | 1427 | 13636 |
| Maslaoi | city | Province of Ilocos Norte | Philippines | 17.9833333 | 120.4833333 | 36 | 15895 |
| Maslong | city | Province of Ilocos Norte | Philippines | 18.3977778 | 120.6341667 | 1427 | 13636 |
| Monte | city | Province of Ilocos Norte | Philippines | 18.0333333 | 120.5166667 | 147 | 31628 |
| Morong | city | Province of Ilocos Norte | Philippines | 17.9166667 | 120.4666667 | 144 | 25698 |
| Muglavis | city | Province of Ilocos Norte | Philippines | 17.9833333 | 120.4833333 | 36 | 15895 |
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