| Country | Location |
| Guinea | Western Africa, bordering the North Atlantic Ocean, between Guinea-Bissau and Sierra Leone |
| Guinea-Bissau | Western Africa, bordering the North Atlantic Ocean, between Guinea and Senegal |
| Guyana | Northern South America, bordering the North Atlantic Ocean, between Suriname and Venezuela |
| Haiti | Caribbean, western one-third of the island of Hispaniola, between the Caribbean Sea and the North Atlantic Ocean, west of the Dominican Republic |
| Heard Island and McDonald Islands | islands in the Indian Ocean, about two-thirds of the way from Madagascar to Antarctica |
| Holy See (Vatican City) | Southern Europe, an enclave of Rome (Italy) |
| Honduras | Central America, bordering the Caribbean Sea, between Guatemala and Nicaragua and bordering the Gulf of Fonseca (North Pacific Ocean), between El Salvador and Nicaragua |
| Hong Kong | Eastern Asia, bordering the South China Sea and China |
| Hungary | Central Europe, northwest of Romania |
| Iceland | Northern Europe, island between the Greenland Sea and the North Atlantic Ocean, northwest of the UK |
| India | Southern Asia, bordering the Arabian Sea and the Bay of Bengal, between Burma and Pakistan |
| Indian Ocean | body of water between Africa, the Southern Ocean, Asia, and Australia |
| Indonesia | Southeastern Asia, archipelago between the Indian Ocean and the Pacific Ocean |
| Iran | Middle East, bordering the Gulf of Oman, the Persian Gulf, and the Caspian Sea, between Iraq and Pakistan |
| Iraq | Middle East, bordering the Persian Gulf, between Iran and Kuwait |
| Ireland | Western Europe, occupying five-sixths of the island of Ireland in the North Atlantic Ocean, west of Great Britain |
| Isle of Man | Western Europe, island in the Irish Sea, between Great Britain and Ireland |
| Israel | Middle East, bordering the Mediterranean Sea, between Egypt and Lebanon |
| Italy | Southern Europe, a peninsula extending into the central Mediterranean Sea, northeast of Tunisia |
| Jamaica | Caribbean, island in the Caribbean Sea, south of Cuba |
| Jan Mayen | Northern Europe, island between the Greenland Sea and the Norwegian Sea, northeast of Iceland |
| Japan | Eastern Asia, island chain between the North Pacific Ocean and the Sea of Japan, east of the Korean Peninsula |