This article features a list of islands sorted by their name beginning with the letter R.
| Island's Name | Island group(s) | Country/Countries |
|---|
| |  Croatia |
| Rabbit | | |
| Rabbit | |  Ireland |
| Rabbit | |  Lebanon |
| Rabbit | Calcasieu Lake, | |
| Georgian Bay, | |
| Rabbit | Mississippi River, | |
| Racoon | | |
| Lake Winnipesaukee, | |
| | |
| Rakino | | |
| Raiatea | |  Overseas Lands of France |
| Rainsford | Boston Harbor, | |
| Rakahanga | |  Cook Islands |
| Ram Island | | |
| Rambutyo | |  Papua New Guinea |
| | |
| Ramree | |  Myanmar |
| Lake Mead, | |
| Randall's | East River, | |
| Randolph | Grand Bay, | |
| | |
| Rangiroa | | |
| Rangitata | | |
| Rangitoto | | |
| Raoul | | |
| Raroia | | |
| Rarotonga | | Cook Islands |
| Raspberry | Mississippi River, | |
| Raspberry | Kodiak Archipelago, | |
| Rat | Rat Islands group of the Aleutian Islands, | |
| Rat | City Island Harbor, | |
| Rathlin | | |
| Rathlin O'Birne | | Ireland |
| Rato | Estremadura islands |  Portugal |
| Ile aux Rats | Cosmoledo atoll |  Seychelles |
| Rattlesnake | Clear Lake, | |
| Rattlesnake | Okanagan Lake, | |
| Lake Winnipesaukee, | |
| Ravenga | |  Vanuatu |
| Île de Ré | | |
| Reao | | |
| Rearlaplap | |  Marshall Islands |
| Rebbenesøya | |  Norway |
| Ile aux Récifs | Inner Islands | Seychelles |
| Reclaimed | Inner Islands | Seychelles |
| Red Rock | San Francisco Bay, | |
| Redbud | Susquehanna River, | |
| Lake Winnipesaukee, | |
| Mississippi River, and | |
| |  Antigua and Barbuda |
| Reedy | Delaware River, | |
| Reichenau | | |
| Reindeer | Lake Winnipeg, | |
| Reinøya | | Norway |
| Rema | |  Ethiopia |
| Rémire | | Seychelles |
| Renaissance Island | | |
| René-Levasseur | Manicouagan Reservoir, | |
| Rennell | |  Solomon Islands |
| | Norway |
| Replotlandet | |  Finland |
| Residence | | Seychelles |
| Resolution | | |
| Resolution | | |
| Resource Island | | Seychelles |
| Réunion Island | | |
| Revillagigedo | Alexander Archipelago, | |
| Rharbi | |  Tunisia |
| Rhineia | |  Greece |
| Rhodes | | Greece |
| Rice | Lost Lake, | |
| Rikers | Upper East River, | |
| Rincah | |  Indonesia |
| Ringvassøya | | Norway |
| Ripapa | | |
| Roaninish | | Ireland |
| Roanoke | Outer Banks, | |
| Roastbeef | |  Namibia |
| Robben | |  South Africa |
| Robert | | Claimed by:
Argentine Antarctica,  Argentina,
of  Chile, and
of the |
| Isla Robertson | | Claimed by the: as part of the and by
Argentina |
| Cumberland River, | |
| Robertson | Tygart Valley River, | |
| Robins | Peconic Bay, | |
| Robinson Crusoe | | Chile |
| Roche Babri | Inner Islands | Seychelles |
| Roche Bouquet | Inner Islands | Seychelles |
| Roche Canon | Inner Islands | Seychelles |
| Roche Du Sud | Inner Islands | Seychelles |
| Roche Grande Maman | Inner Islands | Seychelles |
| Roche Tortue | Inner Islands | Seychelles |
| Rocher Des Oiseaux | |  Mauritius |
| Ile Roches | | Mauritius |
| Willamette River, | |
| Rock | Green Bay, | |
| Rockabill | | Ireland |
| Rockall | | |
| Roderick | | |
| Roi-Namur | | Marshall Islands |
| Ilhéu das Rólas | | |
| | |
| Rømø | |  Denmark |
| | Denmark |
| |  Grenada |
| Île Ronde | | Mauritius |
| Île Ronde | Amqui, | |
| Île Ronde | Beauceville, | |
| Île Ronde (Île du Docteur) | Beauharnois, | |
| roadstead of Brest, | |
| Île Ronde | Contrecœur, | |
| Île Ronde | Dundee, | |
| Île Ronde | Grand-Remous, | |
| Île Ronde | Gros-Mécatina, | |
| Île de la Ronde (Île Tekakwitha) | Kahnawake, | |
| Île Ronde | La Pêche, | |
| Île Ronde | La Tuque, | |
| Île Ronde | Lac-Casault, | |
| Île Ronde | Lac-Tremblant-Nord, | |
| Île Ronde | Léry, | |
| Île Ronde | L′Isle-Verte, | |
| Île Ronde | Mont-Laurier, | |
| Île Ronde | Mont Saint-Michel, | |
| Île Ronde | Notre-Dame-de-Pontmain, | |
| Île Ronde | Potton, | |
| Île Ronde | Preissac, | |
| Île Ronde | Rimouski, | |
| Île Ronde (Île Brûlée) | Rimouski, | |
| Île Ronde | Îles Laval, Rivière des Prairies, | |
| Île Ronde | Rouyn-Noranda, | |
| Île Ronde | Saint-Antoine-de-l′Isle-aux-Grues, | |
| Île Ronde | Saint-Boniface, | |
| Île Ronde | Saint-François-du-Lac, | |
| Île Ronde | Saint-Henri-de-Taillon, | |
| Île Ronde | Saint-Hippolyte, | |
| Île Ronde | Saint-Ignace-de-Loyola, | |
| Île Ronde | Saint-Lucien, | |
| Île Ronde | Saint-Paul-de-l′Île-aux-Noix, | |
| Île Ronde | Saint-Roch-de-Mékinac, | |
| Île Ronde | Saint-Sulpice, | |
| Île Ronde | Sainte-Thérèse-de-la-Gatineau, | |
| Île Ronde | Senneterre, | |
| Île Ronde | Inner Islands | Seychelles |
| Île Ronde (Île Chapdelaine) | Shawinigan, | |
| Île Ronde | Val-Brillant, | |
| Île Ronde | Vaudreuil-Dorion, | |
| Île Ronde (Île Bray) | Vaudreuil-Dorion, | |
| Ohio River, | |
| Rongelap Atoll | | Marshall Islands |
| Rongerik Atoll | | Marshall Islands |
| Roosevelt | East River, | |
| Georgian Bay, | |
| | Antarctica |
| Willamette River, | |
| Ross | Allegheny River, | |
| Rosscor | | Ireland |
| Lofoten | Norway |
| Rostam | | |
| R. Thompson's | Allegheny River, | |
| Rotoroa | | |
| Rottumeroog | Eemsmond, | |
| Rottumerplaat | Eemsmond, | |
| |  Fiji |
| Rough | | Ireland |
| Rough | | |
| Krenitzin Islands subgroup of the Fox Islands group of the Aleutian Islands, | |
| Round | Coast Land District, | |
| Round | Lillooet Land District, | |
| Round | Nanaimo Land District, | |
| Round | Rupert Land District, | |
| Dorset | |
| Round (Pak Sha Chau, 白沙洲) | | |
| Round (Ngan Chau, 銀洲) | | |
| Round | | |
| Round (a.k.a. Bumpkin) | | |
| | |
| Straits of Mackinac, | |
| Detroit River, | |
| Mississippi Sound, | |
| Round | | |
| Lake Winnipesaukee, | |
| Round | | |
| | |
| Coutts Inlet, Baffin Bay, | |
| Cross Bay, Chesterfield Inlet, | |
| Buckeye Lake, Fairfield County, | |
| Round | Algoma, | |
| Round | Frontenac, | |
| Round | Kenora, | |
| Round | Lanark, | |
| Round | Leeds, | |
| Round | Lennox and Addington, | |
| Round | Parry Sound, | |
| Round | Sudbury, | |
| Round | Thunder Bay, | |
| Frankland Islands, | |
| Hogan Group, northern Bass Strait, | |
| Round Bottle | | |
| Round Head | | |
| | |
| Round Shag | | |
| Round Wolf | | |
| Rousay | The North Isles, | |
| Rowa | | Vanuatu |
| Rowett | | Claimed by Argentine Antarctica, Argentina, of Chile, and of the |
| Rowley | Queen Elizabeth Islands, | |
| Isle Royale | Lake Superior, | |
| Rozenburg | | |
| Ruapuke | | |
| Rubud Al Gharbiyah | |  Bahrain |
| Rubud Al Sharqiyah | | Bahrain |
| Ruden | | |
| Rudolf Island | | |
| Rügen | | |
| Rugged | | Claimed by Argentine Antarctica, Argentina, of Chile, and of the |
| Ruhnu | |  Estonia |
| Rùm | | |
| Mississippi River, | |
| Rusk Holm | The North Isles, | |
| | |
| | |
| Russel | St. Clair River, | |
| Russell | Frankland Group National Park, | |
| Russell | Southern Moreton Bay Islands, | |
| Ruxton | De Courcy Islands Group, | |
| Rysa Little | The South Isles, | | |
