Proto-Celtic *Dānowyos

→ English Danube (derived)

→ Old English Donua (derived)

→ Bulgarian Дунав (derived)

→ Catalan Danubi (derived)

→ Czech Dunaj (derived)

→ German Donau (derived)

→ Greek Δούναβης (derived)

→ Spanish Danubio (derived)

→ French Danube (derived)

→ Irish Danóib (derived)

→ Italian Danubio (derived)

→ Latin Danubius (derived)

→ Macedonian Дунав (derived)

→ Polish Dunaj (derived)

→ Portuguese Danúbio (derived)

→ Romanian Dunăre (derived)

→ Russian Дунай (derived)

→ Serbo-Croatian Dunav (derived)

→ Serbo-Croatian Дунав (derived)

→ Slovak Dunaj (derived)

→ Slovene Dunaj (derived)

→ Ukrainian Дунай (derived)