| 100% | ISCHIA | 6 | Tourist island in the Gulf of Naples |
| 82% | CAPRI | 5 | Island in the Gulf of Naples |
| 73% | CAPRI | 5 | Island off Italy in the Gulf of Naples |
| 65% | CAPRI | 5 | Island in the bay of Naples |
| 59% | IBIZA | 5 | Tourist island of the Balearics in the Mediterranean |
| 58% | ISCHIA | 6 | Island in the Tyrrhenian Sea at the entrance to the Bay of Naples |
| 57% | ALAND | 5 | Finnish island group in the Gulf of Bothnia |
| 55% | CAPRI | 5 | Island off west Italy in the Bay of Naples |
| 55% | PERSIAN | 7 | Gulf in which the island of Bahrain is located |
| 53% | CAPRI | 5 | Isle on the Gulf of Naples |
| 53% | OILRIGS | 7 | Structures in the Gulf of Mexico |
| 53% | SAOTOME | 7 | & 9D Island nation in the Gulf of Guinea whose landmarks include Pico Cao Grande |
| 52% | PEI | 3 | Spot in the Gulf of St. Lawrence |
| 52% | BAHREIN | 7 | Island in the Persian Gulf |
| 52% | AEGINA | 6 | Island of Greece in the Saronic Gulf south of Salamis |
| 52% | SAOTOME | 7 | __ and Príncipe: island country in the Gulf of Guinea |
| 52% | SOCOTRA | 7 | Island near the mouth of the Gulf of Aden that became part of South Yemen in 1967 |
| 49% | EXXONVALDEZ | 11 | Oil tanker that ran aground in the Gulf of Alaska in 1989 |
| 49% | ZANZIBAR | 8 | Island in the Indian Ocean off the coast of Tanzania |
| 49% | BORNEO | 6 | Island in the Pacific that houses the sultanate of Brunei |
| 49% | CAPRI | 5 | Isle in the Bay of Naples |
| 48% | BUTE | 4 | Island in the Firth of Clyde whose only town is Rothesay |
| 48% | ARRAN | 5 | Resort island in the Firth of Clyde |
| 48% | ARRAN | 5 | Island in the Firth of Clyde off the SW coast of Scotland |
| 48% | ARRAN | 5 | Island in the Firth of Clyde off the southwest coast of Scotland |
| 48% | BUTE | 4 | Island in the Firth of Clyde that houses the town of Rothesay |
| 47% | PUERTO | 6 | ___ Rico: Island in the Caribbean sea, southeast of Miami-Florida |
| 47% | NEWBRITAIN | 10 | Largest island in the Bismarck Archipelago of Papua New Guinea |
| 47% | ALAND | 5 | — Islands, group of over 6,000 in the Gulf of Bothnia under Finnish administration |
| 47% | CORFU | 5 | Island in the Ionian Sea forming part of a regional unit of Greece |