List of islands by name (M)
This article features a list of islands sorted by their name beginning with the letter M.
M
| Island’s Name | Island group | Country/Countries |
| Ma Wan | ||
| Maadhiguvaru | Gaafu Alif Atoll | |
| Machias Seal | Disputed Between and | Disputed between and |
| Mackay | and | |
| Mackenzie King | Queen Elizabeth Islands, and | |
| Mackinac | Lake Huron, | |
| Maclellan | Tennessee River, | |
| Macquarie | Southern Ocean, | |
| Madagascar | Indian Ocean | |
| La Maddalena | ||
| Iles des Madeleines | ||
| Madeline | Lake Superior, | |
| Madeira | ||
| Madrid Bar | Mississippi River, | |
| Madura | East Java | |
| Maewo | Pacific Ocean | |
| Mafia | Tanzanian Spice Islands | |
| Isla Magdalena | ||
| Magerøya | Nordkapp, Finnmark | |
| Mageshima | Ōsumi Islands part of the Satsunan Islands group of the Ryukyu Islands | |
| Magusaiai | Shortland Islands | |
| Maiao | Windward Islands, Society Islands, |  Overseas Lands of France |
| Mainau | Lake Constance | |
| Mainland | ||
| Main Station | Lake Huron, | |
| Majorca | ||
| Majuli | Brahmaputra River, Assam | |
| Majuro | Ratak Chain | |
| Makada | Duke of York Islands | |
| Makanrushi | Kuril Islands, | |
| Makatea | , | |
| Makema | , | |
| Makura | Shepherd Islands | |
| Malakula | New Hebrides | |
| Malcolm | ||
| Malden | Line Islands | |
| Mal Grad | Lake Prespa | |
| Mallard | Lake Audubon, | |
| Malo | Pacific Ocean | |
| Maloelap Atoll | Ratak Chain | |
| Malpelo | ||
| Malta | Maltese islands | |
| Makronisos | ||
| Mamula | Adriatic Sea | |
| Man | ||
| Mana | Porirua Harbour | |
| Manda | Lamu Archipelago | |
| Mandø | North Frisian Islands | |
| Mangaia | Cook Islands | |
| Manhattan | ||
| Manihi | King George Islands,, | |
| Manihiki | Cook Islands | |
| Manilaid | Gulf of Riga | |
| Manitou | Lake Superior, | |
| Manitou | Apostle Islands, | |
| Manitoulin | Lake Huron, | |
| Manoel | Maltese islands | |
| Mansel | ||
| Manuae | Cook Islands | |
| Manuae | Leeward Islands, Society Islands, French Polynesia | |
| Manus | Admiralty Islands | |
| Maple | Mississippi River, | |
| Ilha de Marajó | ||
| Marawah, United Arab Emirates | Persian Gulf | |
| Mare | ||
| Marechal | Beira Baixa islands | |
| Marettimo | Aegadian Islands | |
| Isla Margarita | Nueva Esparta | |
| Margitsziget | Danube River | |
| Maria | ||
| Maria Cleofas | Islas Marías, | |
| Maria Madre | Islas Marías, | |
| Maria Magdalena | Islas Marías, | |
| Marie-Galante | , Lesser Antilles | |
| Marinduque | Luzon | |
| Marinha Nova | Beira Litoral islands | |
| Mark | Lake Winnipesaukee, | |
| Marmara | Marmara Islands | |
| Marrowstone | Puget Sound, | |
| Marsh | ||
| Marshall | ||
| Martha's Vineyard | ||
| Martin | ||
| Ilhas Martin Vaz | Atlantic Ocean | |
| Martinhal | Algarve islands | |
| Martuska-sziget | Danube River | |
| Masbate Island | Masbate | |
| Maskali | ||
| Masnedø | ||
| Mason | Mississippi River, | |
| Mason's | Mystic River, | |
| Massey | Queen Elizabeth Islands, | |
| Matadouce | Beira Litoral islands | |
| Matagorda | ||
| Mataiva | Palliser Islands,, | |
| Matakana | Bay of Plenty | |
| Mataso | Shepherd Islands | |
| Mathraki | Ionian Islands | |
| Matia | San Juan Islands, | |
| Matinicus | ||
| Matiu | Wellington Harbour | |
| Maatsukyer | Maatsuyker Island Group, | |
| Matsu | Lienchang County | |
| Matty | ||
| Matua | Kuril Islands, | |
| Matureivavao | Acteon Group,, | |
| Maupiti | Windward Islands, Society Islands, | Overseas Lands of France |
| Maud | Marlborough Sounds | |
| Maui | Hawaiian Islands, | |
| Mauke | Cook Islands | |
| Mauritius | Mascarene Islands | |
| Maurice Island | ||
| Maury | Puget Sound, | |
| Mausinsel | Bavaria, | |
| Maxwell | Georgian Bay | |
| Mayne | Gulf Islands, | |
| Mayor | Bay of Plenty | |
| Mayotte | Comoros | |
| Mazaki | ||
| McCallum | Lake Huron, | |
| McCauley | ||
| McCormicks | Susquehanna River, | |
| McCoy | Georgian Bay | |
| McCoy | Mississippi River, | |
| McEvers | Illinois River, | |
| McLaren | Georgian Bay | |
| McNeil | Puget Sound, | |
| McQuade | Georgian Bay | |
| McQueens | ||
| Isle of Meadows | ||
| Medny | Komandorski Islands, | Owned by the, controlled by |
| Meganisi | Ionian Islands | |
| Mehetia | Windward Islands, Society Islands, | Overseas Lands of France |
| Meighen | Queen Elizabeth Islands, | |
| Mejit | Ratak chain | |
| Melbourne | ||
| Mele | Melanesia | |
| Mellum | East Frisian Islands | |
| Melville | Queen Elizabeth Islands, and | |
| Melvin | Lake Winnipesaukee, | |
| Memmert | East Frisian Islands | |
| Mendicant | Barataria Bay, | |
| Merasheen | ||
| Mercer | Lake Washington, | |
| Mercury | ||
| Merelava | Banks Islands | |
| Merig | Banks Islands | |
| Metinic | ||
| Metoma | Torres Islands | |
| Michigan | Lake Superior, | |
| Michipicoten | Lake Superior, | |
| Middle Andaman | Andaman Islands | |
| Middle Bass | Bass Islands, | |
| Middle Brewster | Boston Harbor, | |
| Middle Duck | Lake Huron, | |
| Middle Ground | Mississippi River, | |
| Middle Ground Coastal Battery | Maharashtra | |
| Middle | Lake Erie, | |
| Middle | Ohio River, | |
| Middle | Nightingale Islands, |  British overseas territory of |
| Midgarth | Orkney Islands | |
| Mikurajima | Izu Islands | |
| Mile | Lake Winnipesaukee, | |
| Mili Atoll | Ratak Chain | |
| Mill | ||
| Mill Creek | Ohio River, | |
| Mill Rock | ||
| Milos | Cyclades | |
| Mimami daitō | Daitō Islands part of the Ryukyu Islands | |
| Minami Kojima | Senkaku Islands | Disputed by and |
| Mindanao | Mindanao group | |
| Minicoy | Lakshadweep | |
| Minister | Lake Winnipesaukee, | |
| Mink | Georgian Bay | |
| Mink | Lake Winnipesaukee, | |
| Minna | Miyako Islands part of the Sakishima Islands part of the Ryukyu Islands | |
| Minnicognashene | Georgian Bay | |
| Menorca | ||
| Minquiers | Channel Islands | |
| Minu | Persian Gulf | |
| Mioko | Duke of York Islands | |
| Miserable | Rice Lake, | |
| Mishka | Danube River | |
| Miskan | Persian Gulf | |
| Misool | Raja Ampat Islands | |
| Mistaken | Lake Abitibi, | |
| Mitchell | ||
| Mitchell Key | ||
| Mitiaro | Cook Islands | |
| Mitkof | Alexander Archipelago, | |
| Mitraha | Lake Tana | |
| Miyakejima | Izu Islands | |
| Miyakojima | Miyako Islands part of the Sakishima Islands part of the Ryukyu Islands | |
| Mjältön | High Coast | |
| Mljet | Adriatic Sea | |
| Mo-do-Meio | Beira Litoral islands | |
| Mohácsi-sziget | Danube River | |
| Mohawk | Lake Erie, | |
| Mohéli | Comoros | |
| Mohni | Gulf of Finland | |
| Moho Tani | Marquesas Islands | |
| Île-aux-Moines | Gulf of Morbihan | |
| Moínho | Alentejo islands | |
| Mokoia | Lake Rotorua | |
| Molara | ||
| Molène | Archipel de Molène | |
| Molokai | Hawaii | |
| Møn | ||
| Moneron | Strait of Tartary, | |
| Monhegan | ||
| Monkey | ||
| Monocanock | Susquehanna River, | |
| Monomoy | ||
| Mont Saint-Michel | Normandy | |
| Monte Branco | Alentejo islands | |
| Monte Farinha | Beira Litoral islands | |
| Montecristo | Tuscan Archipelago | |
| Montreal | Hochelaga Archipelago | |
Montserrat  | Leeward Islands of the Lesser Antilles | Overseas territory of the United Kingdom |
| Monument | Shepherd Islands | |
| Moodie | ||
| Moon | Georgian Bay | |
| Moorea | Windward Islands, Society Islands, | Overseas Lands of France |
| Mopelia | Windward Islands, Society Islands, | Overseas Lands of France |
| Moresby | Queen Charlotte Islands, | |
| Morfil | River Senegal | |
| Morgan | ||
| Morraceira | Beira Litoral islands | |
| Morris | Charleston Harbor, | |
| Mors | Limfjorden | |
| Mortland | Illinois River, | |
| Moruroa | , | |
| Moscos Islands | Tanintharyi Region | |
| Mosenthein | Mississippi River, | |
| Moser | Mississippi River, | |
| Moskenesøya | Lofoten | |
| Moso | Shepherd Islands | |
| Mosterøy | Rennesøy municipality, Ryfylke Islands, Rogaland county | |
| Mota | Banks Islands | |
| Mota Lava | Banks Islands | |
| Motiti | Bay of Plenty | |
| Motu One | Windward Islands, Society Islands, | Overseas Lands of France |
| Motuihe | Hauraki Gulf | |
| Motukaramarama | Motukawao Islands, Hauraki Gulf | |
| Moturata | Mouth of the Taieri River | |
| Moturua | Motukawao Islands, Hauraki Gulf | |
| Motutapu | Hauraki Gulf | |
| Motuwi | Motukawao Islands, Hauraki Gulf | |
| Moucha | ||
| Moul of Eswick | ||
| Mount Ao | Zhoushan Archipelago | |
| Mount Desert | ||
| Mount Maji | Zhoushan Archipelago | |
| Mousa | ||
| Mouse | Bermuda | |
| Mouse | Lake Erie, | |
| Moutoa | Whanganui River | |
| Mowat | Georgian Bay, | |
| Muck | Inner Hebrides | |
| Muckle Green Holm | The North Isles, | |
| Muckle Flugga | ||
| Muckle Ossa | ||
| Muckle Roe | ||
| Mud | Detroit River, | |
| Mud Grass | ||
| Mud Island Shoal | Delaware River, | |
| Muharraq | Persian Gulf | |
| Muhu | West Estonian archipelago; Baltic Sea | |
| Isla Mujeres | Caribbean Sea, | |
| Mukawwar | ||
| Mulberry | James River, | |
| Mull | Inner Hebrides | |
| Mumfort | York River, | |
| Murano | Venetian Lagoon, | |
| Murphy | Allegheny River, | |
| Murray | Torres Strait Islands, | |
| Murry | Thousand Islands, | |
| Murter | Adriatic Sea | |
| Musholm | Islands of the Great Belt | |
| Muskeget | ||
| Muskingum | Ohio River, | |
| Mussau | St. Matthias Islands | |
| Mussel Rock | ||
| Mustang | Port Aransas, | |
| Mustapha | Ohio River, | |
| Myingun Island | Rakhine State | |
| Mykines | ||
| Mykonos | Cyclades |