This is a list of islands in the Baltic Sea. The Baltic Sea proper is bordered to the north by the Bothnian Sea and, further north, the Gulf of Bothnia, neither being part of the Baltic Sea proper. The eastern basins the Gulf of Finland and the Gulf of Riga are likewise not considered part of the Baltic Sea proper. Whether islands situated in, or on the borders to, these basins (Åland, Hailuoto and Kotlin) shall be included in the list is therefore a matter of definition.
The Danish islands Zealand (7,000 km² 2,200,000 people), Funen (2,984 km² 400,000 people), Als (312 km² 51,300 people), and Langeland (284 km² 13,300 people) lie in the Danish straits connecting the Baltic Sea and the Kattegat.
| Name | Image | Area | Country |
|---|---|---|---|
| Gotland |  |
2,994 km² |  Sweden
|
| Saaremaa |  |
2,673 km² |  Estonia
|
| Öland |  |
1,342 km² | Sweden
|
| Lolland |  |
1,243 km² |  Denmark
|
| Hiiumaa |  |
989 km² | Estonia
|
| Rügen |  |
935 km² |  Germany
|
| Fasta Åland |  |
685 km² |  Finland
|
| Bornholm |  |
588 km² | Denmark
|
| Kimitoön |  |
560 km² | Finland
|
| Falster |  |
514 km² | Denmark
|
| Usedom |  |
445 km² | Germany and  Poland
|
| Wolin |  |
265 km² | Poland
|
| Møn |  |
218 km² | Denmark
|
| Hailuoto |  |
201 km² | Finland
|
| Muhu |  |
198 km² | Estonia
|
| Fehmarn |  |
185 km² | Germany
|
| Värmdö |  |
181 km² | Sweden
|
| Name | Image | Population | Country |
|---|---|---|---|
| Usedom | |
76,500 | Poland and Germany
|
| Rügen | |
73,000 | Germany
|
| Lolland | |
68,224 | Denmark
|
| Gotland | |
57,381 | Sweden
|
| Värmdö | |
48,000 | Sweden
|
| Bornholm | |
44,100 | Denmark
|
| Falster | |
43,537 | Denmark
|
| Lidingö |  |
43,400 | Sweden
|
| Kotlin |  |
42,800 |  Russia
|
| Saaremaa | |
40,312 | Estonia
|
| Öland | |
23,000 | Sweden
|
| Fasta Åland | |
22,000 | Finland
|
| Wolin | |
17,000 | Poland
|
| Fehmarn | |
14,000 | Germany
|
| Møn | |
12,000 | Denmark
|
| Hiiumaa | |
8,400 | Estonia
|
| Muhu | |
1,822 | Estonia
|
Authority control databases: National  |
|
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