| Island |
Country or location |
Eponym |
|---|
| Ackerman Island |  United States | Joseph Ackerman |
| Agios Efstratios |  Greece | Saint Eustratius (Όσιος Ευστράτιος ο Θαυματουργός), who lived on the island in the 9th century as an exile, because he was opposed to the iconoclastic policies of the Byzantine Emperor Leo the Armenian |
| Agios Georgios | Greece | Saint George |
| Alejandro Selkirk Island |  Chile | Alexander Selkirk |
| Alexander Island | .svg.png) Antarctica | Alexander I of Russia |
| Allen Island |  Australia | John Allen |
| Amherst Island |  Canada | Jeffery Amherst, 1st Baron Amherst |
| Amherst Island | Canada | Jeffery Amherst, 1st Baron Amherst |
| Amund Ringnes Island | Canada | Amund Ringnes |
| Annenkov Island |  South Georgia and the South Sandwich Islands | Mikhail Annenkov |
| Annette Island | United States | Annette Whitney Dall |
| Axel Heiberg Island | Canada | Axel Heiberg |
| Baffin Island | Canada | William Baffin |
| Bainbridge Island | United States | Commodore William Bainbridge |
| Baker Island | United States | Captain Michael Baker |
| Ball's Pyramid | Australia | Lieutenant Henry Ball |
| Banks Island | Canada | Joseph Banks |
| Baranof Island | United States | Alexander Andreyevich Baranov |
| Barrow Island | Australia | Sir John Barrow, 1st Baronet |
| Bartolomé Island |  Ecuador | Sir Bartholomew James Sulivan |
| Bathurst Island | Australia | Henry Bathurst, 3rd Earl Bathurst |
| Bathurst Island | Canada | Henry Bathurst, 3rd Earl Bathurst |
| Beauchene Island |  Falkland islands | Jacques Gouin de Beauchêne |
| Bedford Island | Antarctica | Thomas Bedford |
| Belcher Islands | Canada | Edward Belcher |
| Bellingshausen Island | South Georgia and the South Sandwich Islands | Fabian von Bellingshausen |
| Bentinck Island | Canada | Lord George Bentinck (possibly) |
| Bering Island |  Russia | Vitus Bering |
| Berkner Island | Antarctica | Lloyd Berkner |
| Bermuda |  Bermuda | Juan de Bermúdez |
| Bernard Island | Antarctica | Claude Bernard |
| Bernier Island | Australia | Pierre-François Bernier (presumably) |
| Bismarck Archipelago |  Papua New Guinea | Otto von Bismarck |
| Bjarnason Island | Canada | Matt Bjarnason |
| Blakely Island | United States | Johnston Blakeley |
| Block Island | United States | Adriaen Block |
| Borden Island, Northwest Territories/Nunavut | Canada | Robert Borden |
| Bougainville | Papua New Guinea | Louis Antoine de Bougainville |
| Boularderie Island | Canada | Louis-Simon le Poupet de la Boularderie |
| Bouvet Island |  Norway | Jean-Baptiste Charles Bouvet de Lozier |
| Bowen Island, British Columbia | Canada | James Bowen (Royal Navy officer) |
| Bowen Island (Jervis Bay) | Australia | Richard Bowen RN |
| Bowyer Island, British Columbia | Canada | Sir George Bowyer, 5th Baronet |
| Brenton Island |  South Africa | Jahleel Brenton |
| Bristol Island | South Georgia and the South Sandwich Islands | Augustus Hervey, 3rd Earl of Bristol |
| Brock Island, Northwest Territories | Canada | Reginald W. Brock |
| Brown Island, Northwest Territories | United States | John G. Brown |
| Bruny Island | Australia | Bruni d'Entrecasteaux |
| Burnaby Island | Canada | Robert Burnaby |
| Busta Rhymes Island | United States | Busta Rhymes |
| Bylot Island | Canada | Robert Bylot |
| Camano Island | United States | Jacinto Caamaño |
| Campobello Island | Canada | Lord William Campbell (with name Italianized) |
| Cape Chidley Islands | Canada | John Chidley |
| Charles Alexander Island | Russia | Charles Alexander |
| Charles Island | United States | Charles Deal |
| Charlton Island | Canada | Charles I of England |
| Charron Island | Canada | François Charron |
| Cheeseman Island |  New Zealand | Thomas Frederick Cheeseman |
| Chichagof Island | United States | Vasili Chichagov |
| Chirikof Island | United States | Alexei Chirikov |
| Choiseul Island |  Solomon Islands | Étienne François, duc de Choiseul |
| Churchill Island | Australia | John Churchill |
| Clapperton Island | Canada | Hugh Clapperton |
| Clark Island | Australia | Lieutenant Ralph Clark |
| Clark Island | United States | Midshipman John Clark |
| Clarke Island | Australia | William Clarke |
| Clerke Rocks | South Georgia and the South Sandwich Islands | Charles Clerke |
| Coats Island | Canada | William Coats |
| Cockburn Island | Canada | Francis Cockburn |
| Colville Island | United States | Andrew Colville |
| Cook Islands |  Cook Islands | James Cook |
| Cook Island | South Georgia and the South Sandwich Islands | James Cook |
| Cooper Island | South Georgia and the South Sandwich Islands | Robert Palliser Cooper |
| Cornwallis Island | Canada | William Cornwallis |
| Cortes Island, British Columbia | Canada | Hernán Cortés |
| Crown Prince Frederik Island | Canada | |
| Crozier Island |  Greenland | Francis Crozier |
| Curtis Island | Australia | Roger Curtis |
| Dall Island | United States | William Healey Dall |
| Darwin Island | Ecuador | Charles Darwin |
| Davaar Island |  Scotland | Saint Barr |
| Dawson Island | Chile | See Dawson (surname) |
| Decatur Island | United States | Stephen Decatur |
| Delarof Islands | United States | Evstratii Ivanovich Delarov |
| D'Entrecasteaux Islands | Papua New Guinea | Bruni D'Entrecasteaux |
| Diego Garcia |  British Indian Ocean Territory | Diego García de Moguer |
| Diego Ramírez Islands | Chile | Diego Ramírez |
| Digges Islands | Canada | Dudley Digges |
| Diomede Islands | United States Russia | Saint Diomedes |
| Dirk Hartog Island | Australia | Dirk Hartog |
| Dorre Island | Australia | Peter Dorre |
| Douglas Island | United States | John Douglas |
| Douglas Island | Canada | James Douglas (presumably) |
| D'Oyly Carte Island |  England | Richard D'Oyly Carte |
| Doumer Island | Antarctica | Paul Doumer |
| Drake's Island | England | Francis Drake |
| Drummond Island | United States | Gordon Drummond |
| Dundas Island | Canada | Henry Dundas, 1st Viscount Melville |
| Dundas Island | Canada | Henry Dundas, 1st Viscount Melville |
| D'Urville Island | New Zealand | Jules Dumont d'Urville |
| Edgell Island | Canada | Captain Edgell |
| Edgeøya | Norway | Thomas Edge |
| Eilean Chaluim Chille | Scotland | Saint Columba |
| Eilean Donan | Scotland | Saint Donan |
| Ellef Ringnes Island | Canada | Ellef Ringnes |
| Ellesmere Island | Canada | Francis Egerton, 1st Earl of Ellesmere |
| Ellis Island | United States | Samuel Ellis (colonial New Yorker) |
| Ernst Thälmann Island |  Cuba | Ernst Thälmann |
| Faure Island | Australia | Pierre Faure |
| Fergusson Island | Papua New Guinea | Sir James Fergusson, 6th Baronet |
| Fernandina Island | Ecuador | Ferdinand II of Aragon |
| Fernando de Noronha |  Brazil | Fernão de Loronha |
| Fisher Island | United States | Carl G. Fisher |
| Flaherty Island | Canada | Robert J. Flaherty |
| Flinders Island | Australia | Matthew Flinders |
| Floreana Island | Ecuador | Juan José Flores |
| Fort Denison | Australia | William Denison |
| Fox Island | United States | J.L. Fox |
| Franklin Island | Antarctica | Sir John Franklin |
| Franklin Island | Greenland | Sir John Franklin |
| Franz Josef Land | Russia | Franz Joseph I |
| Fraser Island | Australia | Eliza Fraser |
| Fraser Island | Canada | Robert James Fraser |
| Freeman Island | United States | J.D. Freeman |
| Frobisher's Farthest | Canada | Martin Frobisher |
| Frost Island | United States | Boatswain John Frost |
| Galiano Island, British Columbia | Canada | Dionisio Alcalá Galiano |
| Gambier Island, British Columbia | Canada | James Gambier, 1st Baron Gambier |
| Gambier Islands |  French Polynesia | James Gambier, 1st Baron Gambier |
| Geiger Key | United States | Henry Huling Geiger |
| Graham Island | Canada | Sir James Graham, 2nd Baronet |
| Graham Bell Island | Russia | Alexander Graham Bell |
| Gravina Island | United States | Federico Carlos Gravina y Nápoli |
| Gravina Islands | United States | Federico Carlos Gravina y Nápoli |
| Gribbell Island | Canada | Rev. Francis Barrow Gribbell |
| Grindal Island | Australia | Thomas Grindall |
| Guemes Island | United States | Juan Vicente de Güemes, 2nd Count of Revillagigedo |
| Guss Island | United States | Guss Hoffmaster |
| Guy Fawkes Island | Ecuador | Guy Fawkes |
| Hall Island | Russia | Charles Francis Hall |
| Hans Island | Canada or Greenland | Hans Hendrik |
| Hantzsch Island | Canada | Bernhard Hantzsch |
| Harstine Island | United States | Lt. Henry J. Hartstene |
| Havelock Island |  India | Henry Havelock |
| Hawkesbury Island | Canada | Charles Jenkinson, 1st Earl of Liverpool (Lord Hawkesbury) |
| Heard Island and McDonald Islands | Australia | William Heard and John McDonald |
| Hearst Island | Antarctica | William Randolph Hearst |
| Henderson Island |  Pitcairn Islands | Captain Henderson EIC |
| Henry Island | United States | Henry Wilkes |
| Henry Lawrence Island | India | Henry Montgomery Lawrence |
| Herron Island | United States | Lewis Herron |
| Hooker Island | Russia | Joseph Dalton Hooker |
| Hopkins Island | Australia | John Hopkins |
| Hormuz Island |  Iran | Hormizd I |
| Hornby Island, British Columbia | Canada | Geoffrey Hornby |
| Howe Island, Ontario | Canada | William Howe, 5th Viscount Howe |
| Hutt Island, British Columbia | Canada | John Hutt (Royal Navy officer) |
| Île Bizard, Quebec | Canada | Jacques Bizard |
| Île d'Orléans, Quebec | Canada | Henri II, Duke of Orléans |
| Île Jésus, Quebec | Canada | Jesus |
| Île Perrot | Canada | François-Marie Perrot |
| Île Saint-Louis |  France | Louis IX of France |
| Îles Laval | Canada | François de Laval |
| Inchcolm | Scotland | Saint Columba |
| Inch Kenneth | Scotland | Saint Kenneth |
| Inchmarnock | Scotland | Saint Mearnag |
| Inchmurrin | Scotland | Saint Meadhran/Mirren |
| Innis Chonan | Scotland | Saint Conan |
| Isabela Island | Ecuador | Isabella I of Spain |
| Island of Mozambique |  Mozambique | Mussa Bin Bique |
| Isle La Motte | United States | Pierre La Motte |
| Isle Martin | Scotland | Saint Martin |
| Jackson Island | Russia | Frederick George Jackson |
| Jahleel Island | South Africa | Jahleel Brenton |
| James Island | United States | Reuben James |
| James Ross Island | Antarctica | James Clark Ross |
| Jan Mayen Island | Norway | Jan Jacobs May van Schellinkhout |
| Jens Munk Island | Canada | Jens Munk |
| John Lawrence Island | India | John Lawrence, 1st Baron Lawrence |
| Johnston Atoll | United States | Captain Charles J. Johnston |
| Jones Island | United States | Jacob Jones |
| Jorge Montt Island | Chile | Jorge Montt |
| Juan Fernández Islands | Chile | Juan Fernández (explorer) |
| Keats Island (British Columbia) | Canada | Richard Goodwin Keats |
| Kennedy Island | Solomon Islands | John F. Kennedy |
| Keppel Island | Falkland Islands | Admiral Augustus Keppel |
| Kerguelen |  French Southern and Antarctic Lands | Yves-Joseph de Kerguelen de Trémarec |
| Kermadec Islands | New Zealand | Jean-Michel Huon de Kermadec |
| Ketron Island | United States | William Kittson (name badly misspelt by cartographers) |
| Kilian Island | Canada | Bernhard Kilian |
| King George Island | Antarctica | George III of the United Kingdom |
| King George Islands | Canada | George III of the United Kingdom |
| King George Islands | French Polynesia | George III of the United Kingdom |
| King Island | Australia | Philip Gidley King |
| King William Island | Canada | William IV of the United Kingdom |
| Kirkland Island | Canada | John Kirkland |
| Korovin Island | United States | Ivan Korovin (presumably) |
| Kupreanof Island | United States | Ivan Antonovich Kupreianov |
| Kupriyanov Islands | South Georgia and the South Sandwich Islands | Ivan Kupriyanov |
| Lady Franklin Island | Canada | Lady Jane Franklin |
| Lady Julia Percy Island | Australia | Lady Julia Helen Percy |
| Lanzarote |  Spain | Lancelotto Malocello |
| Lemesurier Island | United States | Midshipman William Le Mesurier |
| Lennox Island | Canada | Charles Lennox, 4th Duke of Richmond |
| Lewis Island | Australia | George Lewis |
| Little Island | Australia | John Little |
| Little Wellington Island | Chile | Arthur Wellesley, 1st Duke of Wellington |
| Loks Land Island | Canada | Michael Lok |
| Lockwood Ø | Greenland | James Booth Lockwood |
| Lopez Island | United States | Gonzalo López de Haro |
| Lord Howe Island | Australia | Richard Howe, 1st Earl Howe |
| Louise Island | Canada | Princess Louise, Duchess of Argyll |
| Lulu Island | Canada | Lulu Sweet |
| Macauley Island | New Zealand | George Mackenzie Macaulay |
| MacDonald Island | Canada | James F. MacDonald |
| Mackenzie King Island | Canada | William Lyon Mackenzie King |
| MacKlintok Island | Russia | Francis Leopold McClintock |
| Macquarie Island | Australia | Lachlan Macquarie |
| Magdalen Islands | Canada | Madeleine Fontaine, seigneur François Doublet's wife |
| Malcolm Island | Canada | Pulteney Malcolm |
| Manoel Island |  Malta | António Manoel de Vilhena |
| Mansel Island | Canada | Robert Mansell |
| Manuel Rodriguez Island | Chile | Manuel Rodríguez Erdoíza |
| Marchena Island | Ecuador | Frey Antonio de Marchena |
| Margaret Island |  Hungary | Saint Margaret of Hungary |
| Mauritius |  Indian Ocean | Maurice of Nassau |
| Mayne Island | Canada | Richard Mayne |
| McIntyre Island | Antarctica | Robert McIntyre, USN |
| McNeil Island | United States | William Henry McNeill |
| McNish Island | South Georgia and the South Sandwich Islands | Harry McNish |
| Melville Island | Australia | Robert Dundas, 2nd Viscount Melville |
| Melville Island | Canada | Robert Dundas, 2nd Viscount Melville |
| Milne Land | Greenland | David Milne |
| Mitkof Island | United States | Admiral Prokofy Mitkov |
| Money Island |  China (claimed by Taiwan and Vietnam) | William Taylor Money |
| Montagu Island | South Georgia and the South Sandwich Islands | John Montagu, 4th Earl of Sandwich |
| Moresby Island | Canada | Fairfax Moresby |
| Moresby Island | Canada | Fairfax Moresby |
| Moreton Island | Australia | James Douglas, 14th Earl of Morton |
| Mornington Island | Australia | Richard Wellesley, 1st Marquess Wellesley (also Earl of Mornington) |
| Moore Island | Canada | Elwood S. Moore |
| Mudge Island | Canada | William Fitzwilliam Mudge |
| Nansen Island | Antarctica | Fridtjof Nansen |
| Nansen Island | Russia | Fridtjof Nansen |
| Necker Island |  British Virgin Islands | Johannes de Neckere |
| Necker Island | United States | Jacques Necker |
| Neil Island | India | James George Smith Neill |
| Nicholson Island | India | R.T. Nicholson |
| Normanby Island | Papua New Guinea | George Phipps, 2nd Marquess of Normanby |
| North Rona | Scotland | Saint Ronan |
| North Seymour Island | Ecuador | Lord Hugh Seymour |
| North Tweedsmuir Island | Canada | John Buchan, 1st Baron Tweedsmuir |
| Ogasawara Islands |  Japan | Ogasawara Sadayori |
| Orcas Island | United States | Juan Vicente de Güemes, 2nd Count of Revillagigedo, whose full name included the name Horcasitas |
| Ostrovul Sfintu Gheorghe |  Romania | Saint George |
| Palmerston Island | Cook Islands | Henry Temple, 2nd Viscount Palmerston |
| Parker Island | Canada | Lieutenant George Ferdinand Hastings Parker |
| Pavlof Islands | United States | Pitka Pavlof |
| Pearse Island | Canada | William Alfred Rombulow Pearse, RN |
| Pender Island | Canada | Daniel Pender |
| Peter Island | British Virgin Islands | Pieter Adriensen |
| Peter I Island | Antarctica (claimed by Norway) | Peter I of Russia |
| Phillip Island | Australia | Arthur Phillip |
| Pickersgill Islands | South Georgia and the South Sandwich Islands | Richard Pickersgill |
| Picton | Chile | Thomas Picton |
| Pitt Island | New Zealand | William Pitt, 1st Earl of Chatham |
| Porcher Island | Canada | Edwin Augustus Porcher |
| Pribilof Islands | United States | Gavriil Pribilof |
| Prince Leopold Island | Canada | Prince Leopold of Saxe-Coburg-Saalfeld |
| Prince of Wales Island (Alaska) | United States | George Augustus Frederick, Prince of Wales |
| Prince of Wales Island (Nunavut), | Canada | Albert Edward, Prince of Wales |
| Prince of Wales Island (Queensland) | Australia | George Augustus Frederick, Prince of Wales |
| Prince Charles Island | Canada | Charles, Prince of Wales |
| Prince Edward Island | Canada | Prince Edward Augustus, Duke of Kent and Strathearn, father of Queen Victoria |
| Prince Patrick Island | Canada | Prince Arthur William Patrick, Duke of Connaught and Strathearn |
| Prinsesse Dagmar Island | Greenland | Princess Dagmar of Denmark |
| Príncipe Island |  São Tomé and Príncipe | Afonso, Prince of Portugal |
| Quadra Island, British Columbia | Canada | Juan Francisco de la Bodega y Quadra |
| Queen Adelaide Archipelago | Chile | Adelaide of Saxe-Meiningen |
| Queen Elizabeth Islands | Canada | Queen Elizabeth II |
| René-Levasseur Island | Canada | René Levasseur |
| Revillagigedo Island | United States | Juan Vicente de Güemes, 2nd Count of Revillagigedo |
| Revillagigedo Islands |  Mexico | Juan Vicente de Güemes, 2nd Count of Revillagigedo |
| Rikers Island | United States | Abraham Rycken (Dutch settler) |
| Robinson Island | Chile | Robinson Crusoe (fictional character) |
| Robinson Island |  Hong Kong | Sir Hercules Robinson, former Governor of Hong Kong |
| Rob Roy Island | Solomon Islands | Rob Roy MacGregor |
| Roderick Island | Canada | Roderick Finlayson |
| Roosevelt Island | Antarctica | Franklin D. Roosevelt |
| Roosevelt Island | United States | Franklin D. Roosevelt |
| Ross Island | Antarctica | James Clark Ross |
| Rothschild Island | Antarctica | Édouard Alphonse de Rothschild |
| Rudolf Island | Russia | Rudolf, Crown Prince of Austria |
| Sabine Island | Greenland | Edward Sabine |
| Saint Barthélemy | France | Bartholomew Columbus |
| St Catherine's Island | .svg.png) Wales | Catherine of Alexandria |
| Saint Helena |  Saint Helena, Ascension and Tristan da Cunha | Helena of Constantinople |
| St Ignace Island | Canada | Ignatius of Loyola |
| Saint John |  United States Virgin Islands | John the Apostle |
| Saint Kitts |  Saint Kitts and Nevis | Saint Christopher |
| St. Lawrence Island, Alaska | United States | Lawrence of Rome |
| Saint Lucia |  Caribbean Sea | Saint Lucy |
| Saint Martin | France
 Sint Maarten | Martin of Tours |
| St Martin's | England | Martin of Tours |
| St Mary's | England | Saint Mary |
| St Michael's Isle |  Isle of Man | Saint Michael |
| St Ninian's Isle | Scotland | Saint Ninian |
| St Patrick's Isle | Isle of Man | Saint Patrick |
| St Paul's Island | Malta | Saint Paul of Tarsus |
| Saint Pierre Island | France | Saint Peter |
| St Serf's Inch | Scotland | Saint Serf |
| Saint Tudwal's Islands | Wales | Tudwal |
| Saint Vincent |  Saint Vincent and the Grenadines | Vincent of Saragossa |
| Salisbury Island | Russia | Rollin D. Salisbury |
| San Andrés Island |  Colombia | Saint Andrew |
| San Clemente Island, California | United States | Saint Clement |
| San Cristóbal Island | Ecuador | Saint Christopher |
| San Domino |  Italy | Saint Domnius |
| San Juan Island, Washington | United States | Juan Vicente de Güemes, 2nd Count of Revillagigedo |
| San Juan Islands, Washington | United States | Juan Vicente de Güemes, 2nd Count of Revillagigedo |
| San Niccolò | Italy | Saint Nicholas |
| San Nicolas Island, California | United States | Saint Nicholas |
| San Pietro Island | Italy | Saint Peter |
| Santa Catalina Island, California | United States | Catherine of Alexandria |
| Santa Isabel Island | Solomon Islands | Saint Elizabeth |
| Santa Luzia |  Cape Verde | Saint Lucy |
| Santa Maria Island |  Portugal | Saint Mary |
| Sant'Antioco | Italy | Saint Antiochus |
| Santiago Island | Cape Verde | Saint James |
| Santo Antão Island | Cape Verde | Saint Anthony |
| Santorini | Greece | Saint Irene |
| São Jorge Island | Portugal | Saint George |
| São Miguel Island | Portugal | Saint Michael |
| São Nicolau Island | Cape Verde | Saint Nicholas |
| São Tomé Island | São Tomé and Príncipe | Saint Thomas |
| São Vicente Island | Cape Verde | Vincent of Saragossa |
| Saunders Island, South Sandwich Islands | South Georgia and the South Sandwich Islands | Charles Saunders (Royal Navy officer) |
| Saunders Island, Greenland | Greenland | James Saunders, RN |
| Schouten Island | Australia | Joost Schouten |
| Seychelles |  Indian Ocean | Jean Moreau de Séchelles |
| Shaw Island | United States | John Shaw |
| Shaw Islands | Antarctica | John E. Shaw |
| Shumagin Islands | United States | Nikita Shumagin |
| Sinclair Island (Washington) | United States | Arthur Sinclair |
| Sint Eustatius |  Caribbean Netherlands | Saint Eustace |
| Sir Hugh Rose Island | India | Hugh Rose, 1st Baron Strathnairn |
| Sir William Peel Island | India | Sir William Peel |
| Smith Island | Australia | William Smith |
| Smith Island | Antarctica | William Smith (not same as above) |
| Smith Island | United States | John Smith |
| Solander Islands | New Zealand | Daniel Solander |
| Somerville Island | Antarctica | Crichton Somerville |
| Spieden Island | United States | Purser William Speiden |
| Søren Norby's Island | Greenland | Søren Norby |
| South Georgia | South Georgia and the South Sandwich Islands | George III of the United Kingdom |
| South Tweedsmuir Island | Canada | John Buchan, 1st Baron Tweedsmuir |
| Starbuck Island |  Kiribati | Valentine Starbuck |
| Stefansson Island | Canada | Vilhjalmur Stefansson |
| Stewart Island | New Zealand | William W. Stewart |
| Stretch Island | United States | Samuel Stretch |
| Stuart Island | United States | Frederick D. Stuart |
| Sverdrup Islands | Canada | Otto Sverdrup |
| Sveti Đorđe |  Montenegro | Saint George |
| Sveti Nikola | Montenegro | Saint Nicholas |
| Sveti Stefan | Montenegro | Saint Stephen |
| Sweyn Holm | Scotland | Sweyn Asleifsson |
| Tagg's Island | England | Tom Tagg |
| Tasmania | Australia | Abel Tasman |
| Tanner Island | South Georgia and the South Sandwich Islands | William G. Tanner |
| Taylor Island | Australia | William Taylor |
| Tennent Islands | Canada | James Emerson Tennent |
| Theodore Roosevelt Island | United States | Theodore Roosevelt |
| Thistle Island | Australia | John Thistle |
| Townshend Island | Australia | Thomas Townshend, 1st Viscount Sydney |
| Traill Island | Greenland | Thomas Stewart Traill |
| Traversay Islands | South Georgia and the South Sandwich Islands | Jean-Baptiste Prevost de Sansac, Marquis de Traversay |
| Tristan da Cunha | Saint Helena, Ascension and Tristan da Cunha | Tristão da Cunha |
| U Thant Island | United States | U Thant |
| Valdes Island | Canada | Cayetano Valdés y Flores |
| Vancouver Island | Canada | George Vancouver |
| Vashon Island | United States | James Vashon |
| Vendovi Island | United States | Ro Veidovi |
| Victoria Island | Canada | Queen Victoria |
| Waldron Island | United States | Richard Russell Waldron or Thomas Westbrook Waldron |
| Wales Island | Canada | William Wales |
| Ward Hunt Island | Canada | George Ward Hunt |
| Weddell Island | Falkland Islands | James Weddell |
| Wellesley Islands | Australia | Richard Wellesley, 1st Marquess Wellesley |
| Wellington Island | Chile | Arthur Wellesley, 1st Duke of Wellington |
| Whidbey Island | United States | Joseph Whidbey |
| Wilson Island | Antarctica | W. Stanley Wilson |
| Wilson Island | India | Archdale Wilson |
| Wolf Island | Ecuador | Theodor Wolf |
| Wolfe Island | Canada | James Wolfe |
| Wollaston Islands | Chile | William Hyde Wollaston |
| Woronkofski Island | United States | Lieutenant Woronkovski |
| Wrangel Island | Russia | Ferdinand von Wrangel |
| Yakobi Island | United States | Ivan Iakobi |
| Yos Sudarso Island |  Indonesia | Yos Sudarso |
| Zarembo Island | United States | Dionizy Zaremba |
| Zavodovski Island | South Georgia and the South Sandwich Islands | Lieutenant Ivan Zavodovski |
