| Mer d'Andaman | Andaman Sea |
| Mer d'Arafura | Arafura Sea |
| Mer d'Aral | Aral Sea |
| Mer d'Azov | Sea of Azov |
| Mer d'Irlande | Irish Sea |
| mer d'Okhotsk | Sea of Okhotsk |
| Mer d'Oman | Arabian Sea |
| Mer de Baffin | Baffin Bay |
| Mer de Banda | Banda Sea |
| Mer de Barents | Barents Sea |
| Mer de Beaufort | Beaufort Sea |
| Mer de Bellingshausen | Bellingshausen Sea |
| Mer de Bering | Bering Sea |
| Mer de Bismarck | Bismarck Sea |
| Mer de Bohai | Bohai Sea |
| mer de Botnie | Bothnian Sea |
| Mer de Béring | Bering Sea |
| mer de Chine méridionale | South China Sea |
| Mer de Chine orientale | East China Sea |
| Mer de Corail | Coral Sea |
| Mer de Crète | Sea of Crete |
| Mer de Célèbes | Celebes Sea |
| Mer de Davis | Davis Sea |
| mer de Galilée | Sea of Galilee |
| Mer de Java | Java Sea |
| Mer de Kara | Kara Sea |
| Mer de Laptev | Laptev Sea |
| Mer de Lincoln | Lincoln Sea |
| Mer de Marmara | Sea of Marmara |
| Mer de Norvège | Norwegian Sea |
| Mer de Rhûn | Sea of Rhûn |
| Mer de Ross | Ross Sea |
| Mer de Scotia | Scotia Sea |
| Mer de Sibuyan | Sibuyan Sea |
| Mer de Sibérie Orientale | East Siberian Sea |
| Mer de Tasman | Tasman Sea |
| Mer de Thrace | Thracian Sea |
| Mer de Timor | Timor Sea |
| Mer de Weddell | Weddell Sea |
| mer des Antilles | Caribbean Sea |
| mer des Caraïbes | Caribbean Sea |
| Mer des Philippines | Philippine Sea |
| Mer des Salomon | Solomon Sea |
| Mer des Sargasses | Sargasso Sea |
| Mer des Tchouktches | Chukchi Sea |
| Mer des Wadden | Wadden Sea |
| Mer du Groenland | Greenland Sea |
| Mer du Japon | Sea of Japan |
| Mer du Labrador | Labrador Sea |
| Mer du Nord | North Sea |
| Mer Egée | Aegean Sea |
| Mer Hayrenik | Mer Hayrenik |
| Mer intérieure | Adjacent sea |
| Mer Ionienne | Ionian Sea |
| mer Jaune | Yellow Sea |
| Mer Ligure | Ligurian Sea |
| Mer Ligurienne | Ligurian Sea |
| Mer Mediterranée | Mediterranean Sea |
| mer Morte | Dead Sea |
| mer Méditerranée | Mediterranean |
| mer Noire | Black Sea |
| mer Rouge | Red Sea |
| Mer Thrace | White Sea |
| Mer Tyrrhénienne | Tyrrhenian Sea |
| mer Égée | Aegean Sea |
| Mer épicontinentale | Marginal sea |
| Mer-sol-balistique-stratégique | Submarine-launched ballistic missile |
| Mer-Égée | Aegean Sea |
| Merab Mamardashvili | Merab Mamardashvili |
| Merano | Merano |
| Merapi | Mount Merapi |
| Merbaka | Merbaka |
| Merbau | Ipil |
| Mercan Dede | Mercan Dede |
| mercanti | profiteer |
| mercantile | commercial |
