| # | Name | Population |
| 18401 | Ile Bulikoko, | 0 |
| 18402 | Ilha Cacuanza, | 0 |
| 18403 | Ilha Caxingango, | 0 |
| 18404 | Ilha do Desterro, journal | 0 |
| 18405 | Ilha de Luanda, spit off the shore of Luanda, Angola | 0 |
| 18406 | Ilha dos Passaros, island in Rio de Janeiro, Brazil | 0 |
| 18407 | Ilha da Quissanga, | 0 |
| 18408 | Ilha da Cazanga, island in Luanda Province, Angola | 0 |
| 18409 | Bonaire, island in the Caribbean, part of the Netherlands | 0 |
| 18410 | Curacao, island country in the Caribbean, part of the Kingdom of the Netherlands | 153,817 |
| 18411 | Green Island, | 0 |
| 18412 | Kadoesjie, island in Curaçao | 0 |
| 18413 | Little Key, island in Sint Maarten | 0 |
| 18414 | Meeuwtje, island in Curaçao | 0 |
| 18415 | Molly Beday, | 0 |
| 18416 | Eiland Rancho, | 0 |
| 18417 | Pauling Islands, | 0 |
| 18418 | Paulet Island, island in Graham Land, Antarctica | 0 |
| 18419 | Ruiz, isla, | 0 |
| 18420 | Passage Rock, | 0 |
| 18421 | Pascal Island, | 0 |
| 18422 | Parallactic Island, | 0 |
| 18423 | Pabellon Island, | 0 |
| 18424 | Oygarden, | 0 |
| 18425 | Oyayubi Island, | 0 |
| 18426 | Owen, Isla, | 0 |
| 18427 | Outcast Islands, in the Palmer Archipelago of Antarctica | 0 |
| 18428 | Ouellette Island, island in Antarctica | 0 |
| 18429 | Beaver Rocks, | 0 |
| 18430 | Osoya, | 0 |
| 18431 | Ortiz Island, | 0 |
| 18432 | Oliphant Islands, | 0 |
| 18433 | Oldroyd Island, | 0 |
| 18434 | Bearing Island, Antarctic island | 0 |
| 18435 | Odbert Island, one of Antarctica's Windmill Islands | 0 |
| 18436 | Numbat Island, An uninhabited island off the coast of Enderby Land, Antarctica | 0 |
| 18437 | Nueva, roca, | 0 |
| 18438 | Novyy Island, | 0 |
| 18439 | Roca, islotes, | 0 |
| 18440 | Robbins Island, island in Bass Strait off the coast of Tasmania | 0 |
| 18441 | Risk Rock, | 0 |
| 18442 | Rigsby Islands, | 0 |
| 18443 | Bergel Rock, | 0 |
| 18444 | Riddle Islands, | 0 |
| 18445 | Rhyolite Islands, | 0 |
| 18446 | Rho Islands, | 0 |
| 18447 | Retour, Ile du, | 0 |
| 18448 | Oom Island, | 0 |
| 18449 | Ongulkalven Island, | 0 |
| 18450 | Ongulgalten, | 0 |
| 18451 | Ongley, Isla, | 0 |
| 18452 | Ondori Island, | 0 |
| 18453 | Ommundsen Island, | 0 |
| 18454 | Omicron Islands, | 0 |
| 18455 | Omega Island, island | 0 |
| 18456 | Paredes, Rocas, | 0 |
| 18457 | Beak Island, Antarctic island | 0 |
| 18458 | Norway Rocks, landform | 0 |
| 18459 | Northtrap Rocks, | 0 |
| 18460 | Beagle Island, island in Antarctica | 0 |
| 18461 | Nord, Ile du, | 0 |
| 18462 | Newton Island, | 0 |
| 18463 | Newman Island, | 0 |
| 18464 | Bayard Islands, | 0 |
| 18465 | New Rock, clothing company | 0 |
| 18466 | Nesoya, island in Asker, Norway | 0 |
| 18467 | Neny Island, | 0 |
| 18468 | Nelson, isla, | 0 |
| 18469 | Nella Island, island in Antarctica | 0 |
| 18470 | Baupres, rocas, | 0 |
| 18471 | Sanctuary Islands, | 0 |
| 18472 | Papua Island, island in the Pacific Ocean | 0 |
| 18473 | Channel Rock (Argentine Islands), | 0 |
| 18474 | Surge Rocks, | 0 |
| 18475 | Rompiente, roca, | 0 |
| 18476 | Blaiklock, isla, | 0 |
| 18477 | Sunday Island, one of Kermadec Islands, New Zealand | 0 |
| 18478 | Pan de Azucar, islote, | 0 |
| 18479 | Biscoe, archipielago, | 0 |
| 18480 | Soldat Island, | 0 |
| 18481 | Observation Island, | 0 |
| 18482 | Obrivistyj Island, | 0 |
| 18483 | O Brien, Isla, | 0 |
| 18484 | Nupkins Island, | 0 |
| 18485 | Reluctant Island, | 0 |
| 18486 | Ramirez Island, island in the Queen Adelaide Archipelago | 0 |
| 18487 | Rambler Island, | 0 |
| 18488 | Rallier Island, | 0 |
| 18489 | Racovitza Islands, | 0 |
| 18490 | Rabot, Isla, | 0 |
| 18491 | Quintana, Islotes, | 0 |
| 18492 | Quilp Rock, | 0 |
| 18493 | Query Island, | 0 |
| 18494 | Pythia Island, | 0 |
| 18495 | Pyrox Island, | 0 |
| 18496 | Pyrites Island, | 0 |
| 18497 | Pyramid Rock, | 0 |
| 18498 | Piramide, islote, | 0 |
| 18499 | Pup Rock, Graham Land, Antarctica | 0 |
| 18500 | Pullen Island, | 0 |
