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This article features a list of islands sorted by their name beginning with the letter G.
| Island's Name |
Island group(s) |
Country/Countries
|
| Gabaret |
Mississippi River,  Illinois |
 United States
|
| Gabriola |
Gulf Islands,  British Columbia |
 Canada
|
| Gaga |
Beira Litoral Islands |
 Portugal
|
| Gaivota |
Beira Litoral Islands |
Portugal
|
| Gairsay |
The North Isles,  Orkney Islands |
 Scotland
|
| Galiano |
Gulf Islands, British Columbia |
Canada
|
| Galila |
Lake Zway |
 Ethiopia
|
| Gall |
Lough Erne |
 Ireland
|
| Gallinara |
|
 Italy
|
| Galt |
North Channel,  Ontario |
Canada
|
| Galveston |
 Texas |
United States
|
| Gansy |
Lake Winnipesaukee,  New Hampshire |
United States
|
| Gapøya |
|
 Norway
|
| Garden |
Lake Huron, Ontario |
Canada
|
| Garden |
Lake Nipissing, Ontario |
Canada
|
| Garden |
Saint Lawrence River, Ontario |
Canada
|
| Garden |
 Western Australia |
 Australia
|
| Gardner |
 Louisiana |
United States
|
| Garove |
Vitu Islands |
 Papua New Guinea
|
| Garratt |
West Lake Ontario |
Canada
|
| Gasket |
West Lake Ontario |
Canada
|
| Gateshead |
 Nunavut |
Canada
|
| Gaua |
Banks Islands |
 Vanuatu
|
| Gavi |
Pontine Islands |
Italy
|
| Gavdos |
|
 Greece
|
| Geada |
Algarve Islands |
Portugal
|
| Geike |
Lake Nipigon, Ontario |
Canada
|
| Gelila Zakarias |
Lake Tana |
Ethiopia
|
| Genovesa |
Galápagos Islands |
 Ecuador
|
| Geomundo |
|
 South Korea
|
| George |
 Falkland Islands |
 United Kingdom
|
| George |
Georgian Bay, Ontario |
Canada
|
| Georgetown |
Ohio River,  Pennsylvania |
United States
|
| Georgina |
Lake Simcoe, Ontario |
Canada
|
| Germ |
Persian Gulf |
 Iran
|
| Geronisos |
|
 Cyprus
|
| Gertrude |
North Channel, Ontario |
Canada
|
| Gerumajima |
Kerama Islands part of the Okinawa Islands part of the Ryukyu Islands |
 Japan
|
| Gęsia Kępa |
Oder Lagoon islands |
 Poland
|
| Ghegheto |
Lake Huron, Ontario |
Canada
|
| Giannutri |
 Tuscan Archipelago |
Italy
|
| Giants Tomb |
Georgian Bay, Ontario |
Canada
|
| Gibbs |
South Shetland Islands |
Claimed by:
Argentine Antarctica,  Argentina,
 Antártica Chilena Province of  Chile, and
 British Antarctic Territory of the United Kingdom
|
| Gibraltar Island |
Lake Erie,  Ohio |
United States
|
| Gidicho |
Lake Abaya |
Ethiopia
|
| Gigha |
Inner Hebrides |
Scotland
|
| Giglio |
Tuscan Archipelago |
Italy
|
| Gil |
British Columbia |
Canada
|
| Gilbert |
Mississippi River,  Missouri |
United States
|
| Gilford |
British Columbia |
Canada
|
| Gimsøya |
Lofoten |
Norway
|
| Gioura |
Sporades |
Greece
|
| Giudecca |
 Venetian Lagoon |
Italy
|
| Giske |
Møre og Romsdal |
Norway
|
| Gisløy |
|
Norway
|
| Glimps Holm |
Orkney Islands |
Scotland
|
| Glines |
Lake Winnipesaukee, New Hampshire |
United States
|
| Gloup Holm |
 Shetland Islands |
Scotland
|
| Glykiotissa |
|
Cyprus
|
| Goat |
Lough Erne |
Ireland
|
| Goat |
Whitsunday Islands,  Queensland |
Australia
|
| Goat |
Sydney Harbour |
Australia
|
| Goat |
Auckland Region |
 New Zealand
|
| Goat |
Otago Harbour |
New Zealand
|
| Goat |
Niagara Falls  New York |
United States
|
| Goat |
 Rhode Island |
United States
|
| Goat |
 Maine |
United States
|
| Goat |
North Channel, Ontario |
Canada
|
| Goat |
 South Carolina |
United States
|
| Gödi-sziget |
|
 Hungary
|
| Godøy |
|
Norway
|
| Goeree-Overflakkee |
part of the Dutch province South Holland |
 Netherlands
|
| Gokceada |
Aegean Islands |
 Turkey
|
| Golem Grad |
Lake Prespa |
 North Macedonia
|
| Goli otok |
translates as "naked island" |
 Croatia
|
| La Gomera |
 Canary Islands |
 Spain
|
| Goodin |
Mississippi River, Minnesota |
United States
|
| Goose Island |
Great Salt Lake,  Utah |
United States
|
| Goose |
Lake Nipissing, Ontario |
Canada
|
| Goose |
British Columbia |
Canada
|
| Goose |
San Juan Islands,  Washington |
United States
|
| Gooseberry |
North Channel, Ontario |
Canada
|
| Gorée |
Dakar |
 Senegal
|
| Gorgona |
|
 Colombia
|
| Gorgona |
Tuscan Archipelago |
Italy
|
| Gossa |
|
Norway
|
| Gotland |
|
 Sweden
|
| Gotska Sandön |
|
Sweden
|
| Gough |
 Tristan da Cunha |
British overseas territory of Saint Helena, Ascension and Tristan da Cunha
|
| Governor |
Thimble Islands,  Connecticut |
United States
|
| Governor |
Georgian Bay, Ontario |
Canada
|
| Governors |
Lake Winnipesaukee, New Hampshire |
United States
|
| Gower |
Cumberland River,  Tennessee |
United States
|
| Gozo |
Għawdex, Maltese islands |
 Malta
|
| Graciosa |
 Azores |
Portugal
|
| Graciosa |
Canary Islands |
Spain
|
| Graemsay |
Orkney Islands |
Scotland
|
| Graham |
Queen Elizabeth Islands, Nunavut |
Canada
|
| Graham |
Haida Gwaii, British Columbia |
Canada
|
| Gramatal Island |
Beira Litoral Islands |
Portugal
|
| Gran Canaria |
Canary Islands |
Spain
|
| Granary |
Islands of Gdańsk |
Poland
|
| Grand Cayman |
 Cayman Islands |
United Kingdom
|
| Grand |
Jason Islands of the Falkland Islands |
United Kingdom
|
| Grand |
Balsam Lake, Ontario |
Canada
|
| Grand |
Louisiana |
United States
|
| Grand |
Niagara River, New York |
United States
|
| Grand |
Lake Champlain,  Vermont |
United States
|
| Grand Manan |
 New Brunswick |
Canada
|
| Grand Terre |
Louisiana |
United States
|
| Grande Comore |
Comoros |
 Comoros
|
| Grande-Terre |
 Guadeloupe, Lesser Antilles |
 France
|
| Grape |
Lake Simcoe, Ontario |
Canada
|
| Gräsö |
|
Sweden
|
| Gravelly |
Lough Erne |
Ireland
|
| Gravine |
Mobile Bay,  Alabama |
United States
|
| Gray |
Georgian Bay, Ontario |
Canada
|
| Great Blasket |
Blasket Islands |
Ireland
|
| Great Britain |
|
United Kingdom
|
| Great |
Falkland Islands |
United Kingdom
|
| Great |
Cork Harbour |
Ireland
|
| Great |
 Massachusetts |
United States
|
| Great Exuma |
Bahama Islands |
 Bahamas
|
| Great La Cloche |
North Channel, Ontario |
Canada
|
| Great Manitou |
Lake Nipissing, Ontario |
Canada
|
| Great Nicobar |
Nicobar Islands |
 India
|
| Greater Mount Changtu |
Zhoushan Archipelago |
 China
|
| Greater Mount Yang |
Zhoushan Archipelago |
China
|
| Greater Tunbs |
Persian Gulf |
Iran
|
| Green |
Queensland |
Australia
|
| Green |
 New South Wales |
Australia
|
| Green |
 Jersey, Channel Islands |
Crown dependency
|
| Green |
Isles of Scilly |
United Kingdom
|
| Green |
Poole Harbour |
United Kingdom
|
| Green |
Rideau River, Ontario |
Canada
|
| Green |
Severn Sound, Ontario |
Canada
|
| Greene |
Ottawa River, Ontario |
Canada
|
| Green |
 Hong Kong |
China
|
| Green |
Taitung County |
 Republic of China
|
| Green |
Red Sea |
 Egypt
|
| Greene |
Lake Huron, Ontario |
Canada
|
| Greene |
Lake Ontario, Ontario |
Canada
|
| Greenisland |
Northern Ireland |
United Kingdom
|
Greenland  |
|
 Denmark
|
| Greenspond |
 Newfoundland and Labrador |
Canada
|
| Greenwich |
South Shetland Islands |
Claimed by:
Argentine Antarctica, Argentina,
Antártica Chilena Province of Chile, and
British Antarctic Territory of the United Kingdom
|
| Grenadier |
Thousand Islands New York |
United States
|
| Grenadier |
Saint Lawrence River Ontario |
Canada
|
| Greifswalder Oie |
|
 Germany
|
| Grgur |
|
Croatia
|
| Gribbell |
British Columbia |
Canada
|
| Griffith |
Queen Elizabeth Islands, Nunavut |
Canada
|
| Griffith |
Windmill Islands |
Antarctica
|
| Griffith |
Georgian Bay, Ontario |
Canada
|
| Grimes |
Mississippi River, Illinois |
United States
|
| Grímsey |
|
 Iceland
|
| Grindstone |
Thousand Islands (Saint Lawrence River), New York |
United States
|
| Grindstone |
Big Rideau Lake, Ontario |
Canada
|
| Grip |
|
Norway
|
| Gris Bourbe |
Louisiana |
United States
|
| Grisvågøy |
|
Norway
|
| Gröde-Appelland |
North Frisian Islands |
Germany
|
| Groix |
Morbihan,  Bretagne |
France
|
| Grøtøy |
|
Norway
|
| Grunay |
Out Skerries, Shetland Islands |
Scotland
|
| Gruney |
Shetland Islands |
Scotland
|
| Grytøy |
Vesterålen |
Norway
|
| Guam |
|
United States
|
| Guana Key |
Island Territory of Sint Maarten,  Netherlands Antilles |
Kingdom of the Netherlands
|
| Guemes |
San Juan Islands, Washington |
United States
|
| Guernsey |
 Guernsey, Channel Islands |
Crown dependency
|
| Gull |
Lake Nipissing, Ontario |
Canada
|
| Gull |
Lake Ontario, Ontario |
Canada
|
| Gull |
Lake Mead,  Nevada |
United States
|
| Gunnison |
Great Salt Lake, Utah |
United States
|
| Gurskøy |
|
Norway
|
| Gyali |
Dodecanese |
Greece
|
| Gyaros |
Cyclades |
Greece
|
