Synonym: fyftsjin
| Part of speech | cardinal number |
|---|
| Afrikaans | vyftien |
|---|---|
| Albanian | pesëmbëdhjetë |
| Czech | patnáct |
| Danish | femten |
| Dutch | vijftien |
| English | fifteen |
| English (Old English) | fiftiene |
| Esperanto | dek kvin |
| Finnish | viisitoista |
| French | quinze |
| German | fünfzehn |
| Greek | δεκαπέντε |
| Hungarian | tizenöt |
| Icelandic | fimtán |
| Italian | quindici |
| Jamaican Patois | fiftiin |
| Latin | quindecim |
| Low German | vövtein; vyvteen |
| Luxemburgish | fofzéng |
| Norwegian | femten |
| Papiamento | djesinko; djesinku |
| Polish | piętnaście |
| Portuguese | quinze |
| Saterland Frisian | füüftien |
| Spanish | quince |
| Sranan | tinafeyfi |
| Swahili | kumi na tano; kumi na -tano |
| Swedish | femton |
| Thai | สิบห้า |