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MacRobertson Land (General Region) |
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Madagascar (Nation) |
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Madras (State) |
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Maine (State) |
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Malagasy (Nation) |
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Malaysia (Nation) |
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Maldiven (Nation) |
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Maldives (Nation) |
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Malediven (Nation) |
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Maledives (Nation) |
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Mano Bay (Bay) |
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Mano-wan (Bay) |
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Marion Bay (Bay) |
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Marseille Gulf (Gulf) |
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Martha's Vineyard (Island) |
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Massachusetts (State) |
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Mauritania (Nation) |
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Mauritanie (Nation) |
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Mayotte (Dependent State) |
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Mediterranean Region (General Sea Area) |
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Mediterranean Sea (IHO Sea Area) |
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Mediterranean Sea (Large Marine Ecosystem)  has preferred alternative Mediterranean Sea |
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Mexico (Nation) |
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Mexico Gulf (IHO Sea Area) |
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Micronesia (Nation) |
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Mifraẕ H̱efa (Bay) |
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Misool (Island) |
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Misoöl (Island) |
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Mississippi (State) |
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Miyake-jima (Island) |
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Miyake-Jima Island (Island) |
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Monaco (Nation) |
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Moray Firth (Firth) |
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Morbihan Bay (Bay) |
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Moreton Island (Island) |
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Morocco (Nation) |
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Mozambique (Nation) |
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Mozambique Channel (IHO Sea Area) |
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Mutsu Bay (Bay) |
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Mutsu-wan (Bay) |
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Mys Lopatka (Cape) |
