| Part of speech | common noun |
|---|---|
| Hyphenation | del·fen,o |
| Singular | Plural | |
|---|---|---|
| Nominative | delfeno | delfenoj |
| Accusative | delfenon | delfenojn |
| Afrikaans | dolfyn |
|---|---|
| Catalan | dofí |
| Danish | delfin |
| Dutch | dolfijn |
| English | dolphin |
| Faeroese | delfin; springari |
| Finnish | delfiini |
| French | dauphin |
| German | Delphin; Tümmler |
| Greek | δελφίνι |
| Hawaiian | naiʻa |
| Hungarian | delfin |
| Italian | delfino |
| Latin | delphin |
| Malay | dolfin |
| Papiamento | dòlfein |
| Polish | delfin |
| Portuguese | boto; delfim; golfinho |
| Russian | дельфин |
| Saterland Frisian | Delphin |
| Spanish | delfín |
| Sranan | profosu |
| Swedish | delfin |
| Turkish | yunus baliğı |
| Welsh | dolffin |