| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Machigar | city | Sakhalinskaya Oblast' | Russia | 54.2833333 | 142.4333333 | 0 | 54 |
| Magotsue | city | Sakhalinskaya Oblast' | Russia | 46.05 | 142.1833333 | 3 | 800 |
| Magotsuesawa | city | Sakhalinskaya Oblast' | Russia | 46.1 | 142.2 | 3 | 1039 |
| Magotue | city | Sakhalinskaya Oblast' | Russia | 46.05 | 142.1833333 | 3 | 800 |
| Maguntan | city | Sakhalinskaya Oblast' | Russia | 48.2 | 142.5166667 | 19 | 691 |
| Maguntan | city | Sakhalinskaya Oblast' | Russia | 48.15 | 142.5833333 | 3 | 579 |
| Maguntanhama | city | Sakhalinskaya Oblast' | Russia | 48.15 | 142.5833333 | 3 | 579 |
| Makar'evskiy | city | Sakhalinskaya Oblast' | Russia | 50.8325 | 142.1019444 | 177 | 74 |
| Makarevka | city | Sakhalinskaya Oblast' | Russia | 50.8325 | 142.1019444 | 177 | 74 |
| Makarevka | city | Sakhalinskaya Oblast' | Russia | 50.8166667 | 142.1333333 | 587 | 119 |
| Makarov | city | Sakhalinskaya Oblast' | Russia | 48.6333333 | 142.8 | 0 | 374 |
| Makarovka | city | Sakhalinskaya Oblast' | Russia | 48.7797222 | 154.0469444 | 442 | 37 |
| Malinovka | city | Sakhalinskaya Oblast' | Russia | 46.65 | 142.4333333 | 22 | 996 |
| Malinovka | city | Sakhalinskaya Oblast' | Russia | 49.4666667 | 142.9 | 380 | 242 |
| Malkovo | city | Sakhalinskaya Oblast' | Russia | 48.8 | 142.9166667 | 0 | 260 |
| Malo-Tymovskoye | city | Sakhalinskaya Oblast' | Russia | 50.75 | 142.55 | 439 | 341 |
| Malotymovo | city | Sakhalinskaya Oblast' | Russia | 50.75 | 142.55 | 439 | 341 |
| Maloye Machi | city | Sakhalinskaya Oblast' | Russia | 51.1166667 | 142.25 | 3 | 94 |
| Malyy | city | Sakhalinskaya Oblast' | Russia | 48.9833333 | 142.15 | 22 | 9524 |
| Malyye Machi | city | Sakhalinskaya Oblast' | Russia | 51.1166667 | 142.25 | 3 | 94 |
| Mangiday | city | Sakhalinskaya Oblast' | Russia | 51.1 | 142.25 | 3 | 94 |
| Manoue | city | Sakhalinskaya Oblast' | Russia | 47.9166667 | 142.5 | 22 | 672 |
| Manui | city | Sakhalinskaya Oblast' | Russia | 47.9166667 | 142.5 | 22 | 672 |
| Manuinishi | city | Sakhalinskaya Oblast' | Russia | 47.9 | 142.4333333 | 200 | 902 |
| Manuisawa | city | Sakhalinskaya Oblast' | Russia | 47.9 | 142.4333333 | 200 | 902 |
| Maoka | city | Sakhalinskaya Oblast' | Russia | 47.0511111 | 142.0569444 | 436 | 48048 |
| Markovo | city | Sakhalinskaya Oblast' | Russia | 48.8 | 142.9166667 | 0 | 260 |
| Marotakoe | city | Sakhalinskaya Oblast' | Russia | 47.2833333 | 142.75 | 42 | 1036 |
| Maruyama | city | Sakhalinskaya Oblast' | Russia | 47.2333333 | 142.7 | 62 | 3043 |
| Mary | city | Sakhalinskaya Oblast' | Russia | 48.9833333 | 142.15 | 22 | 9524 |
| Maskal'vo | city | Sakhalinskaya Oblast' | Russia | 51.2833333 | 143.4833333 | 0 | 64 |
| Maskalivo | city | Sakhalinskaya Oblast' | Russia | 51.2833333 | 143.4833333 | 0 | 64 |
| Masklab | city | Sakhalinskaya Oblast' | Russia | 51.2833333 | 143.4833333 | 0 | 64 |
| Masugawa | city | Sakhalinskaya Oblast' | Russia | 50.3 | 155.9166667 | 370 | 63 |
| Masugawa Fishery | city | Sakhalinskaya Oblast' | Russia | 50.3 | 155.9166667 | 370 | 63 |
| Masukawa | city | Sakhalinskaya Oblast' | Russia | 50.3 | 155.9166667 | 370 | 63 |
| Masukawa-gyojo | city | Sakhalinskaya Oblast' | Russia | 50.3 | 155.9166667 | 370 | 63 |
| Masukawa-gyojō | city | Sakhalinskaya Oblast' | Russia | 50.3 | 155.9166667 | 370 | 63 |
| Matoma | city | Sakhalinskaya Oblast' | Russia | 47.7 | 142.55 | 13 | 540 |
| Matrosov | city | Sakhalinskaya Oblast' | Russia | 49.4666667 | 142.8666667 | 472 | 242 |
| Matrosovo | city | Sakhalinskaya Oblast' | Russia | 49.4666667 | 142.8666667 | 472 | 242 |
| Matsu-kawa Fishery | city | Sakhalinskaya Oblast' | Russia | 50.3 | 155.9166667 | 370 | 63 |
| Matsuwa | city | Sakhalinskaya Oblast' | Russia | 48.0611111 | 153.2472222 | 269 | 57 |
| Matsuwa-hikojo | city | Sakhalinskaya Oblast' | Russia | 48.0611111 | 153.2472222 | 269 | 57 |
| Matsuwa-hikōjō | city | Sakhalinskaya Oblast' | Russia | 48.0611111 | 153.2472222 | 269 | 57 |
| Mauka | city | Sakhalinskaya Oblast' | Russia | 47.0511111 | 142.0569444 | 436 | 48048 |
| Medvedevka | city | Sakhalinskaya Oblast' | Russia | 47.6 | 142.0666667 | 646 | 611 |
| Medvedevka | city | Sakhalinskaya Oblast' | Russia | 46.2 | 142.25 | 0 | 357 |
| Medvezh'ye | city | Sakhalinskaya Oblast' | Russia | 48.9166667 | 142.25 | 291 | 540 |
| Medvezh'yevka | city | Sakhalinskaya Oblast' | Russia | 47.6 | 142.0666667 | 646 | 611 |
| Medvezh'yevka | city | Sakhalinskaya Oblast' | Russia | 46.2 | 142.25 | 0 | 357 |
| Merei | city | Sakhalinskaya Oblast' | Russia | 46.6275 | 142.9027778 | 3 | 31874 |
| Mereya | city | Sakhalinskaya Oblast' | Russia | 46.6275 | 142.9027778 | 3 | 31874 |
| Mezhdurech'ye | city | Sakhalinskaya Oblast' | Russia | 48.9666667 | 142.75 | 685 | 406 |
| Mezhdurech'ye | city | Sakhalinskaya Oblast' | Russia | 49.65 | 144.0333333 | 364 | 243 |
| Mgachi | city | Sakhalinskaya Oblast' | Russia | 51.15 | 142.25 | 52 | 101 |
| Mgachi | city | Sakhalinskaya Oblast' | Russia | 51.05 | 142.2666667 | 167 | 96 |
| Midzukho | city | Sakhalinskaya Oblast' | Russia | 46.8966667 | 142.2788889 | 259 | 1119 |
| Mikazukiyama | city | Sakhalinskaya Oblast' | Russia | 47.1388889 | 152.2588889 | 269 | 57 |
| Mikhailovskoye | city | Sakhalinskaya Oblast' | Russia | 50.8302778 | 142.1747222 | 65 | 131 |
| Mikhaylov-Sakhalinskiy | city | Sakhalinskaya Oblast' | Russia | 50.8302778 | 142.1747222 | 65 | 131 |
| Mikhaylovka | city | Sakhalinskaya Oblast' | Russia | 50.8302778 | 142.1747222 | 65 | 131 |
| Mikhaylovskoye | city | Sakhalinskaya Oblast' | Russia | 50.8302778 | 142.1747222 | 65 | 131 |
| Mil'kovo | city | Sakhalinskaya Oblast' | Russia | 51.65 | 143.3666667 | 0 | 28 |
| Mil'kvo | city | Sakhalinskaya Oblast' | Russia | 51.65 | 143.3666667 | 0 | 28 |
| Milikvo | city | Sakhalinskaya Oblast' | Russia | 51.65 | 143.3666667 | 0 | 28 |
| Minagishi | city | Sakhalinskaya Oblast' | Russia | 46.8333333 | 142.9666667 | 298 | 482 |
| Minakishi | city | Sakhalinskaya Oblast' | Russia | 46.8333333 | 142.9666667 | 298 | 482 |
| Minami Kaitsuka | city | Sakhalinskaya Oblast' | Russia | 46.7 | 142.7333333 | 3 | 229 |
| Minami-Nayosi | city | Sakhalinskaya Oblast' | Russia | 46.4338889 | 141.8602778 | 6 | 422 |
| Minami-enkotan | city | Sakhalinskaya Oblast' | Russia | 46.9833333 | 143.0833333 | 0 | 302 |
| Minami-hamatori | city | Sakhalinskaya Oblast' | Russia | 46.6666667 | 141.8666667 | 518 | 19973 |
| Minami-ikedzuki | city | Sakhalinskaya Oblast' | Russia | 46.4833333 | 142.3666667 | 0 | 872 |
| Minami-iketsuki | city | Sakhalinskaya Oblast' | Russia | 46.4833333 | 142.3666667 | 0 | 872 |
| Minami-ikezuki | city | Sakhalinskaya Oblast' | Russia | 46.4833333 | 142.3666667 | 0 | 872 |
| Minami-kaizuka | city | Sakhalinskaya Oblast' | Russia | 46.7 | 142.7333333 | 3 | 229 |
| Minami-kotan | city | Sakhalinskaya Oblast' | Russia | 46.25 | 141.2666667 | 0 | 71 |
| Minami-nayoshi | city | Sakhalinskaya Oblast' | Russia | 46.4338889 | 141.8602778 | 6 | 422 |
| Minami-nayoshi-tanzan | city | Sakhalinskaya Oblast' | Russia | 46.4333333 | 141.95 | 72 | 686 |
| Minami-shokuminchi | city | Sakhalinskaya Oblast' | Russia | 47.8833333 | 142.2 | 75 | 355 |
| Minami-toyosaka | city | Sakhalinskaya Oblast' | Russia | 46.8225 | 142.315 | 196 | 1443 |
| Minami-toyosakae | city | Sakhalinskaya Oblast' | Russia | 46.8225 | 142.315 | 196 | 1443 |
| Minamihama-dori | city | Sakhalinskaya Oblast' | Russia | 46.6666667 | 141.8666667 | 518 | 19973 |
| Minamihama-dōri | city | Sakhalinskaya Oblast' | Russia | 46.6666667 | 141.8666667 | 518 | 19973 |
| Minamisawa | city | Sakhalinskaya Oblast' | Russia | 47.4333333 | 142.0333333 | 111 | 657 |
| Minamisawa | city | Sakhalinskaya Oblast' | Russia | 48.2666667 | 142.6 | 344 | 685 |
| Minamisen | city | Sakhalinskaya Oblast' | Russia | 46.4 | 141.9 | 65 | 566 |
| Minamiura | city | Sakhalinskaya Oblast' | Russia | 46.8508333 | 151.8597222 | 3 | 89 |
| Minamizawa | city | Sakhalinskaya Oblast' | Russia | 47.4333333 | 142.0333333 | 111 | 657 |
| Mineral'noye | city | Sakhalinskaya Oblast' | Russia | 47.5166667 | 141.9666667 | 262 | 480 |
| Mineralino | city | Sakhalinskaya Oblast' | Russia | 47.5166667 | 141.9666667 | 262 | 480 |
| Mineralinoye | city | Sakhalinskaya Oblast' | Russia | 47.5166667 | 141.9666667 | 262 | 480 |
| Mitsrevka | city | Sakhalinskaya Oblast' | Russia | 46.8030556 | 142.7327778 | 39 | 1397 |
| Mitsulevka | city | Sakhalinskaya Oblast' | Russia | 46.8030556 | 142.7327778 | 39 | 1397 |
| Mitsuriyofuka | city | Sakhalinskaya Oblast' | Russia | 46.8030556 | 142.7327778 | 39 | 1397 |
| Mivka | city | Sakhalinskaya Oblast' | Russia | 52.5 | 143.2333333 | 0 | 81 |
| Miyuki | city | Sakhalinskaya Oblast' | Russia | 47.1833333 | 142.75 | 118 | 4504 |
| Mizuho | city | Sakhalinskaya Oblast' | Russia | 46.8966667 | 142.2788889 | 259 | 1119 |
| Moaka | city | Sakhalinskaya Oblast' | Russia | 47.0511111 | 142.0569444 | 436 | 48048 |
| Moenrunaibo | city | Sakhalinskaya Oblast' | Russia | 47.5666667 | 141.9666667 | 347 | 474 |
| Mogotsui | city | Sakhalinskaya Oblast' | Russia | 46.05 | 142.1833333 | 3 | 800 |
| Mokochi | city | Sakhalinskaya Oblast' | Russia | 46.1 | 142.2 | 3 | 1039 |
| Mokoti | city | Sakhalinskaya Oblast' | Russia | 46.05 | 142.1833333 | 3 | 800 |
| Mokotsui | city | Sakhalinskaya Oblast' | Russia | 46.05 | 142.1833333 | 3 | 800 |
| Molyanka | city | Sakhalinskaya Oblast' | Russia | 47.2333333 | 142.05 | 236 | 579 |
| Monchigar | city | Sakhalinskaya Oblast' | Russia | 54.2833333 | 142.4333333 | 0 | 54 |
| Moneron | city | Sakhalinskaya Oblast' | Russia | 46.2833333 | 141.2166667 | 209 | 117 |
| Mororochi | city | Sakhalinskaya Oblast' | Russia | 49.3333333 | 142.0833333 | 269 | 215 |
| Morotsu | city | Sakhalinskaya Oblast' | Russia | 49.3333333 | 142.0833333 | 269 | 215 |
| Morskaya | city | Sakhalinskaya Oblast' | Russia | 47.8494444 | 142.5205556 | 3 | 627 |
| Moshira | city | Sakhalinskaya Oblast' | Russia | 46.4666667 | 141.8333333 | 259 | 246 |
| Moshiraho | city | Sakhalinskaya Oblast' | Russia | 47.1936111 | 142.0636111 | 16 | 482 |
| Moshirambo | city | Sakhalinskaya Oblast' | Russia | 47.1936111 | 142.0636111 | 16 | 482 |
| Moshirarushinai | city | Sakhalinskaya Oblast' | Russia | 46.4666667 | 141.8333333 | 259 | 246 |
| Moshiri | city | Sakhalinskaya Oblast' | Russia | 46.4333333 | 143.3333333 | 278 | 146 |
| Moshiro | city | Sakhalinskaya Oblast' | Russia | 46.4666667 | 141.8333333 | 259 | 246 |
| Mosira | city | Sakhalinskaya Oblast' | Russia | 46.4666667 | 141.8333333 | 259 | 246 |
| Mosirakho | city | Sakhalinskaya Oblast' | Russia | 47.1936111 | 142.0636111 | 16 | 482 |
| Mosiri | city | Sakhalinskaya Oblast' | Russia | 46.4333333 | 143.3333333 | 278 | 146 |
| Mosiro | city | Sakhalinskaya Oblast' | Russia | 46.4666667 | 141.8333333 | 259 | 246 |
| Mosiya | city | Sakhalinskaya Oblast' | Russia | 50.2833333 | 142.15 | 875 | 65 |
| Moskal'vo | city | Sakhalinskaya Oblast' | Russia | 53.5669444 | 142.5041667 | 13 | 38 |
| Moskalavo | city | Sakhalinskaya Oblast' | Russia | 53.5669444 | 142.5041667 | 13 | 38 |
| Moskol'vo | city | Sakhalinskaya Oblast' | Russia | 51.2833333 | 143.4833333 | 0 | 64 |
| Mostovaya | city | Sakhalinskaya Oblast' | Russia | 48.7166667 | 141.8833333 | 442 | 450 |
| Motima | city | Sakhalinskaya Oblast' | Russia | 48.7666667 | 144.6666667 | 36 | 79 |
| Motodomari | city | Sakhalinskaya Oblast' | Russia | 48.2833333 | 142.6166667 | 32 | 685 |
| Motokawakami | city | Sakhalinskaya Oblast' | Russia | 47.0833333 | 142.65 | 357 | 12264 |
| Motomari | city | Sakhalinskaya Oblast' | Russia | 48.2833333 | 142.6166667 | 32 | 685 |
| Mototomari | city | Sakhalinskaya Oblast' | Russia | 48.2833333 | 142.6166667 | 32 | 685 |
| Motoyama | city | Sakhalinskaya Oblast' | Russia | 47.7666667 | 142.15 | 275 | 432 |
| Mramornaya | city | Sakhalinskaya Oblast' | Russia | 47.2333333 | 142.05 | 236 | 579 |
| Mramornaya | city | Sakhalinskaya Oblast' | Russia | 46.2883333 | 143.3938889 | 29 | 238 |
| Mramornyy | city | Sakhalinskaya Oblast' | Russia | 46.2883333 | 143.3938889 | 29 | 238 |
| Mudo | city | Sakhalinskaya Oblast' | Russia | 49.0666667 | 142.2 | 9 | 537 |
| Mudō | city | Sakhalinskaya Oblast' | Russia | 49.0666667 | 142.2 | 9 | 537 |
| Muitomari | city | Sakhalinskaya Oblast' | Russia | 46.4 | 141.8666667 | 377 | 317 |
| Murakami | city | Sakhalinskaya Oblast' | Russia | 50.7333333 | 156.1333333 | 137 | 59 |
| Murakami | city | Sakhalinskaya Oblast' | Russia | 50.7333333 | 156.15 | 0 | 59 |
| Murakami-gyojo | city | Sakhalinskaya Oblast' | Russia | 50.7333333 | 156.1333333 | 137 | 59 |
| Murakami-gyojo | city | Sakhalinskaya Oblast' | Russia | 50.7333333 | 156.15 | 0 | 59 |
| Murakami-gyojō | city | Sakhalinskaya Oblast' | Russia | 50.7333333 | 156.1333333 | 137 | 59 |
| Murakami-gyojō | city | Sakhalinskaya Oblast' | Russia | 50.7333333 | 156.15 | 0 | 59 |
| Murakami-saki | city | Sakhalinskaya Oblast' | Russia | 50.7333333 | 156.1333333 | 137 | 59 |
| Murav'yevo | city | Sakhalinskaya Oblast' | Russia | 46.5086111 | 143.3019444 | 0 | 335 |
| Muz'm | city | Sakhalinskaya Oblast' | Russia | 53.2333333 | 141.8166667 | 3 | 60 |
| Muz'ma | city | Sakhalinskaya Oblast' | Russia | 53.2333333 | 141.8166667 | 3 | 60 |
| Muz'ma | city | Sakhalinskaya Oblast' | Russia | 53.8833333 | 142.7166667 | 121 | 89 |
| Muz'sv | city | Sakhalinskaya Oblast' | Russia | 53.8833333 | 142.7166667 | 121 | 89 |
| Mysvykova | city | Sakhalinskaya Oblast' | Russia | 47.1833333 | 143.0333333 | 0 | 628 |
| Mārotakoe | city | Sakhalinskaya Oblast' | Russia | 47.2833333 | 142.75 | 42 | 1036 |
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