| EM | East Maui |
| FF | French Frigate Shoals (incl. Tern and other islands) |
| GP | Gardner Pinnacles |
| H | Hawai'i Island |
| HI | The eight Hawaiian Islands (Ni'ihau, Kaua'i, O'ahu, Moloka'i, Lana'i, Maui, Kaho'olawe, and Hawai'i) |
K | Kaua'i Island |
| Ka | Kaho'olawe Island |
| Kl | Ka'ula Island |
| Ko | Ko'olau Mountains, O'ahu |
| Ku | Kure Atoll (incl. Sand and Green Islands) |
| L | Lana'i Island |
| La | Laysan Island |
| Le | Lehua Island |
| Li | Lisianski Island |
| M | Maui Island |
| Mi | Midway Atoll (incl. Sand and Eastern Islands) |
| Ml | Molokini Island |
| Mo | Moloka'i Island |
| N | Nihoa Island |
| Ne | Necker Island |
| Ni | Ni'ihau Island |
|
| NWI | Northwestern Hawaiian Islands |
O | O'ahu Island (incl. Mokoli'i Islet) |
| PH | Pearl and Hermes Atoll |
| Wa | Wai'anae Mountains, O'ahu |
| WM | West Maui |