| 100% | IONIAN | 6 | — Islands, group in Greece including Corfu, Zante and Ithaca |
| 45% | LEEWARD | 7 | — Islands, group in French Polynesia in the South Pacific including Bora Bora and Tahaa |
| 45% | LEEWARD | 7 | - Islands, group in French Polynesia in the South Pacific including Bora Bora and Tahaa |
| 45% | TRISTAN | 7 | & 21A Group of volcanic islands in the South Atlantic including Inaccessible and Nightingale |
| 42% | IONIAN | 6 | Island group with Corfu and Kefalonia |
| 39% | CARIBBEAN | 9 | Group of islands including Jamaica and Barbados |
| 39% | CARIBBEAN | 9 | Group of islands including Jamaica and Trinidad |
| 39% | LEEWARD | 7 | Group of islands that includes Antigua and Barbuda |
| 38% | CYCLADES | 8 | Group of islands in the Aegean Sea including Anafi |
| 37% | ISLESOF | 7 | & 17D Island group southwest of Cornwall that includes St Mary's and Tresco |
| 36% | ANTILLES | 8 | Group of islands in the Caribbean consisting of the Greater — and Lesser — |
| 36% | GREECE | 6 | Country whose islands include Corfu and Mykonos |
| 35% | BIMINI | 6 | Island group in the Bahamas |
| 35% | CYCLADES | 8 | Island group in the Aegean Sea |
| 34% | BORABORA | 8 | Island group in French Polynesia (2 wds.) |
| 34% | UNITING | 7 | Joining military group in Greece |
| 34% | EFTA | 4 | Trading group established in Europe in 1960 whose members now include Iceland and Norway |
| 34% | BIMINI | 6 | An island group in the Bahamas |
| 33% | AZORES | 6 | Portuguese island group in the Atlantic Ocean |
| 33% | PHI | 3 | When repeated, an island group in Thailand |
| 33% | PHI | 3 | When doubled, an island group in Thailand |
| 33% | SPORADES | 8 | Name given to two groups of Greek islands in the Aegean Sea; the Northern — and Southern — |
| 33% | MARIANAS | 8 | Island group that includes Guam |
| 33% | EAGLE | 5 | ___ Island, island in Antarctica that is volcanic in origin and part of the James Ross Island Volcanic Group |
| 32% | CROZET | 6 | Tiny French island group in Southern Indian Ocean |
| 32% | SPRATLY | 7 | Disputed island group in the South China Sea |
| 32% | PHI | 3 | When repeated twice, an island group in Thailand |
| 32% | ALAND | 5 | Finnish island group in the Gulf of Bothnia |