Countries the Danube River Flows Through

The Danube River passes through or borders 10 countries (source lists 9; Moldova is sometimes included for its short Danube border):

1. Germany
2. Austria
3. Slovakia
4. Hungary
5. Croatia
6. Serbia
7. Bulgaria
8. Romania
9. Moldova (brief border)
10. Ukraine

It is Europe's second-longest river (after the Volga) and a vital commercial and cultural corridor.