Between Komárno and Štúrovo

• Veľký ostrov
• Čenkovský ostrov
• Barnabáš - Močiansky ostrov

Between Komárno and Bratislava

• Žitný ostrov
  Žitný ostrov
  Žitný ostrov, also called Veľký Žitný ostrov to differentiate it from Malý Žitný ostrov , is a river island in southwestern Slovakia, extending from Bratislava to Komárno. It lies between the Danube and its tributary Little Danube and is a major part of the Danubian Flat...
  
  
• Malý žitný ostrov
• Veľkolélsky ostrov (in fact, it's a peninsula
  Peninsula
  A peninsula is a piece of land that is bordered by water on three sides but connected to mainland. In many Germanic and Celtic languages and also in Baltic, Slavic and Hungarian, peninsulas are called "half-islands"....
  
   today)
• Benkove ostrovy
  Benkove ostrovy
  Benkove ostrovy is group of twelve islets which are located in the Gabčíkovo water reservoir south of Bratislava, west from Kalinkovo village. They were built in the years 2006 and 2007 as part of flood protection for the Slovak capital, Bratislava...
  
  
• Ostrov kormoránov
• Dunajský ostrov
• Obecný ostrov
• Ostrov orliaka morského - island of White-tailed Eagle
• Bird Island
  Bird Island, Slovakia, Šamorín
  Bird Island is a small island in the Hrušovská zdrž , which is part of Gabčíkovo Reservoir, south-west of Šamorín, Slovakia. The island was built because of the constructions of the Gabčíkovo-Nagymaros dams on the Danube as habitat compensation for areas consequently flooded. The island is part of...
  
   - Vtáčí ostrov (Gabčíkovo)

Islands in the water reservoirs in the Slovakia

• Slanický ostrov
• Vtáčí ostrov (Oravská priehrada)

Former Islands

• ostrov Červenej armády (in fact, it's a peninsula
  Peninsula
  A peninsula is a piece of land that is bordered by water on three sides but connected to mainland. In many Germanic and Celtic languages and also in Baltic, Slavic and Hungarian, peninsulas are called "half-islands"....
  
  today)