This is a list of islands in the Danube River.
| Name | Location | Area (km2) | Population | River km (beginning) | Notes | Image | Map |
|---|---|---|---|---|---|---|---|
| Donauinsel | Austria, Vienna, | 4 | – | 1938.0 | Artificial, created 1970s. | ||
| Kaisermühlen(de)–Bruckhaufen(de) | Austria, Vienna | 8 | 20,000~ | 1937.9 | Peninsula between the New Danube arm and the Old Danube(de) lake – until the late 19th Century, it consisted of several large, marshy islands. | ||
| Leopoldstadt–Brigittenau | Austria, Vienna | 25 | 180,000 | 1932.0 | Between the Danube and Danube Canal – until the late 19th Century, it consisted of what was then North Vienna and many small, marshy islands. | ||
| Sihoť | Slovakia, Bratislava | 2.35 | – | 1876.8 | Protected water source. | ||
| Žitný ostrov | Slovakia | 1,886 | 72,000~ | 1865.8 | Largest river island in Europe. | ||
| Benkove ostrovy | Slovakia, Gabčíkovo water reservoir | 0.06 | – | 1854.0 | Group of 12 islets (0.6 ha) were built in the years 2006 and 2007 as part of flood protection for the Slovak capital. | 
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| Bird Island | Slovakia, Gabčíkovo water reservoir | 0.07 | – | 1848.0 | |||
| Szigetköz | Hungary | 375 | 1843.0 | - | - | 
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| Veľký Lél Island | Slovakia | 2.3 | 0 | 1785.5 | 
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| Elizabeth Island | Slovakia, Komárno | 0.7 | 400 | 1767.1 | 
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| Radvanský ostrov | Slovakia | 0.44 | – | 1747.6 | |||
| Veľký Močanský ostrov | Slovakia | 0.19 | – | 1745.2 | |||
| Malý Močanský ostrov | Slovakia | 0.05 | – | 1743.4 | |||
| Čenkovský ostrov | Slovakia | 0.11 | – | 1733.8 | |||
| Körtvélyes island | Hungary | 5.19 | – | 1728,0 | |||
| Helemba Island | Hungary | 2.1 | – | 1712.9 | |||
| Helemba zátony | Hungary | 0.03 | – | 1710.9 | |||
| Szentendre Island | Hungary, Szentendre | 56 | 6673 + the population of Tótfalu | 1692.2 | |||
| Lupa Island | Hungary, Budapest | 1661.0 | Island on Szentendre branch of the Danube | ||||
| Népsziget | Hungary, Budapest | 0.5 | – | 1655.0 | Turned into a peninsula. | ||
| Óbuda Island | Hungary, Budapest | 1 | – | 1654.0 | Hosts the annual Sziget Festival. | ||
| Margaret Island | Hungary, Budapest | 1 | – | 1651.4 | |||
| Csepel Island | Hungary, Budapest & Pest C. | 257 | 170,000 | 1643.8 | - | - | 
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| Island of Borovo | Croatia | - | - | 1346.4 | |||
| Vukovar Island | Croatia / Serbia | 2 | – | 1333.3 | |||
| Orlov otok | Croatia | - | - | 1328.0 | |||
| Šarengrad Island | Croatia / Serbia | 5 | – | 1313.3 | - | - | 
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| Kamenička ada | Serbia, Novi Sad | 1262.0 | |||||
| Ribarsko Ostrvo | Serbia, Novi Sad | 1252.1 | |||||
| Petrovaradinska ada | Serbia, Novi Sad | 1252.0 | |||||
| Koviljski rit | Serbia | 20~ | 1243.1 | ||||
| Krčedinska ada | Serbia | 1231.0 | |||||
| Kožara | Serbia, Belgrade | 0.44 | 0 | 1186.0 | |||
| Great War Island | Serbia, Belgrade, | 2 | – | 1173.8 | At the confluence of the Danube and Sava rivers. | 
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| Ada Huja | Serbia, Belgrade, | 5 | 200~ | 1165.0 | Peninsula since the 1950s | ||
| Višnjička ada | Serbia, Belgrade | 1163.2 | |||||
| Čakljanac | Serbia, Pančevo, | - | - | 1159.2 | - | 
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| Forkontumac | Serbia | - | - | 1158.5 | - |
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| Štefanac | Serbia, Pančevo | 1158.5 | |||||
| Ostrvo (Kostolac) | Serbia | 60~ | 1100.0 | ||||
| Ostrovo, Veliko Gradište | Serbia | 1068.0 | |||||
| Ada Kaleh | Romania / Serbia | 0.7 | 1,000~ | 951.0 | Submerged in 1970 by Iron Gate dam;
Turkish exclave until 1923. |
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| Ostrovul Mare, Islaz | Romania | 792.2 | |||||
| Kozloduy Island | Bulgaria | 6 | – | 697.0 | |||
| Calnovăţ Island | Romania | 616.9 | |||||
| Belene Island | Bulgaria | 41 | – | 576.0 | One-time location of Belene labour camp. | - | 
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| Vardim Island | Bulgaria | 5~ | – | 546.3 | |||
| Vetren/Ciocănești | Bulgaria / Romania | - | - | 394.2 | - | - | 
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| Balta Ialomiței | Romania | 831 | – | 345.0 | |||
| Great Brăila Island | Romania | 710 | 5,000 | 236.5 | - | 
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| Sfântu Gheorghe Island | Romania | 2.1 | |||||
| Danube Delta | Romania / Ukraine | 2,500~
(total area) |
– | 0 | Two large landmasses and several smaller islands between the various arms and channels of the delta –
– North part (old names, 1867 - Leti & Chatal islands) – South part (old names, 1867 - S. Georg & Moishe islands); – (now part of the mainland - Dranova Island); – smaller islands (some bordering Ukraine) - incl.: Tătaru Mare, Babina, Cernovka, Maican, Sacalin, Yermakov, Limba, Kubanskyi, Kyslytskyi, Stepovyi etc. |
