- Afrikaans: vyftien (af)
- Albanian: pesëmbëdhjetë (sq)
- American Sign Language: (OpenB@Side-PalmBack Flatten)
- Amharic: አስራ አምስት (ʾäsra ʾämsət)
- Arabic: خَمْسَةَ عَشَرَ (ḵamsata ʕašara)
- Egyptian Arabic: خمستاشر (ḵamastāšar)
- Aragonese: please add this translation if you can
- Aramaic:
- Hebrew: חמשעסר m (khamsha‘sar), חמשעסרא f (khamsha‘esrē)
- Syriac: ܚܡܫܥܣܪ m (khamsha‘sar), ܚܡܫܥܣܪܐ f (khamsha‘esrē)
- Armenian: տասնհինգ (hy) (tasnhing)
- Asturian: quince (ast)
- Aymara: tunka phisqani
- Azerbaijani: on beş (az)
- Bashkir: ун биш (un biş)
- Basque: hamabost (eu)
- Belarusian: пятна́ццаць (be) (pjatnáccacʹ)
- Bengali: পনেরো (bn) (ponerō) (numeral: ১৫)
- Bikol Central: kaglima
- Breton: pemzek (br)
- Brunei Malay: lima balas
- Bulgarian: петна́десет (bg) (petnádeset), петна́йсет (petnájset)
- Burmese: ဆယ့်ငါး (hcai.nga:) (numeral: ၁၅)
- Buryat: арбан табан (arban taban)
- Carpathian Rusyn: пятна́дцять (pjatnádcjatʹ)
- Catalan: quinze (ca)
- Cebuano: napulog lima
- Central Sierra Miwok: naˀá·ča- máš·ok·a-ˀ hej·i-ˀ
- Chechen: пхийтта (pxiı̇tta)
- Cherokee: ᏍᎩᎦᏚ (sgigadu), ᎯᏍᎦᏚ (hisgadu)
- Chichewa: khumi n'zisanu
- Chinese:
- Cantonese: 十五 (sap6 ng5)
- Hakka: 十五 (sṳ̍p-ńg)
- Mandarin: 十五 (zh) (shíwǔ)
- Chuvash: вунпиллӗк (vunp̬illĕk), вунпилӗк (vunp̬ilĕk)
- Classical Nahuatl: caxtōlli
- Czech: patnáct (cs)
- Dalmatian: čonco
- Danish: femten (da)
- Dena'ina: ch'qilu beq'di
- Dhivehi: ފަނަރަ (fanara)
- Dutch: vijftien (nl) f
- Dzongkha: བཅོ་ལྔ (bco lnga)
- Esperanto: dek kvin
- Estonian: viisteist (et)
- Faroese: fimtan
- Fijian: tini ka lima
- Finnish: viisitoista (fi)
- French: quinze (fr) m
- Friulian: cuindis
- Galician: quince (gl)
- Georgian: თხუთმეტი (ka) (txutmeṭi)
- German: fünfzehn (de)
- Gothic: 𐍆𐌹𐌼𐍆𐍄𐌰𐌹𐌷𐌿𐌽 (fimftaihun)
- Greek: δεκαπέντε (el) (dekapénte)
- Ancient: πεντεκαίδεκα (pentekaídeka), ιε΄ (numeral)
- Greenlandic: aqqaneq-tallimat
- Gujarati: પંદર (gu) (pandar)
- Haitian Creole: kenz
- Hawaiian: ʻumikūmālima
- Hebrew: חֲמֵשׁ־עֶשְׂרֵה f (khamesh esre) (used in counting), חֲמִשָּׁה־עָשָׂר m (khamisha asar)
- Hindi: पंद्रह (hi) m (pandrah)
- Hopi: pakwt niikyang tsivot siikya’ta
- Hungarian: tizenöt (hu)
- Hunsrik: fufzen, finnefzen
- Icelandic: fimmtán (is)
- Ido: dek-e-kin (io)
- Inari Sami: vittnubáloh
- Indonesian: lima belas (id)
- Ingrian: viistoist
- Interlingua: dece-cinque
- Irish: cúig déag
- Italian: quindici (it) m
- Japanese: 十五 (ja) (じゅうご, jūgo)
- Javanese: limalas
- Kannada: ಹದಿನೈದು (kn) (hadinaidu)
- Kazakh: он бес (on bes)
- Khmer: ដប់ប្រាំ (dop pram) (numeral: ១៥)
- Komi-Permyak: дасвит (dasvit)
- Korean: 열다섯 (ko) (yeoldaseot), 십오(十五) (ko) (sibo)
- Kurdish:
- Central Kurdish: پانزە (panze)
- Northern Kurdish: pazde (ku), pazdeh (ku)
- Kyrgyz: он беш (ky) (on beş)
- Ladin: please add this translation if you can
- Lakota: akézaptaŋ
- Lao: ສິບຫ້າ (sip hā) (numeral: ໑໕)
- Latin: quīndecim (la)
- Latvian: piecpadsmit (lv)
- Ligurian: chìnze
- Lithuanian: penkiolika (lt)
- Livonian: vīžtuoistõn
- Lombard: quindes
- Louisiana Creole French: kinz
- Low German: föffteihn (nds), foffteihn (nds)
- German Low German: föffteihn (nds), füwtain (nds) (Münsterland)
- Lü: ᦉᦲᧇᦠᦱᧉ (ṡiibḣaa²) (numeral: ᧑᧕)
- Luxembourgish: fofzéng (lb)
- Macedonian: петна́есет (petnáeset)
- Malagasy: dimy ambinifolo
- Malay: lima belas (ms), sepuluh lima, satu puluh lima
- Malayalam: പതിനഞ്ച് (ml) (patinañcŭ)
- Maltese: ħmistax
- Manchu: ᡨᠣᡶᠣᡥᠣᠨ (tofohon)
- Maori: tekau mā rima (mi)
- Marathi: पंधरा (pandhrā)
- Middle English: fiftene
- Mon: စှ်သုန်
- Mongolian: арван тав (arvan tav)
- Navajo: ashdlaʼáadah
- Neapolitan: quinnece
- Norman: tchinze (Guernsey), tchînze (Jersey)
- North Frisian: füftanj (Föhr)
- Northern Mansi: (please verify) атхуйплов (athujplov)
- Northern Sami: vihttanuppelohkái
- Norwegian: femten (no)
- Occitan: quinze (oc)
- Odia: ପନ୍ଦର (or) (pandara) (numeral: ୧୫ (15))
- Ojibwe: ashi-naanan
- Old Church Slavonic: пѧть на дєсѧтє (pętĭ na desęte) (numeral: е҃і)
- Old English: fīftīene
- Pennsylvania German: fuffzeh, fuftzay
- Persian: پانزده (fa) (pânzdah)
- Piedmontese: quindes
- Polish: piętnaście (pl), (collective) piętnaścioro (pl)
- Portuguese: quinze (pt)
- Punjabi:,
- Gurmukhi: ਪੰਦਰਾਂ (pandrā̃)
- Shahmukhi: پَندراں (pandrāṉ)
- Quechua: chunka pichqayuq
- Romagnol: quinṣ, quingg
- Romani:
- Kalo Finnish Romani: deȟ-o-pangȟ
- Romanian: cincisprezece (ro), cinșpe (informal)
- Romansch: (Grischun) quindesch
- Russian: пятна́дцать (ru) (pjatnádcatʹ)
- S'gaw Karen: တဆံယဲၢ် (ta hsee yeẖ)
- Samoan: sefulu lima
- Sanskrit: पञ्चदश (sa) (páñcadaśa)
- Scottish Gaelic: còig deug
- Seraiki: پَندھَرَاں (pandharāṉ)
- Serbo-Croatian:
- Cyrillic: петнаест
- Roman: petnaest
- Shan: သိပ်းႁႃႈ (síp hāa)
- Sinhalese: පහළොව (pahaḷowa)
- Skolt Sami: vitmlo
- Slovak: pätnásť (sk)
- Slovene: petnajst (sl)
- Sorbian:
- Lower Sorbian: pěśnasćo
- Upper Sorbian: pjatnaće
- Spanish: quince (es) m
- Swahili: kumi na tano
- Swedish: femton (sv)
- Tagalog: labinlima (tl)
- Tahitian: hō'ē 'ahuru ma pae
- Tajik: понздаҳ (tg) (ponzdah)
- Tatar: унбиш (unbiş)
- Telugu: పదిహేను (te) (padihēnu)
- Thai: สิบห้า (th) (sìp-hâa) (numeral: ๑๕)
- Tibetan: བཅོ་ལྔ (bco lnga)
- Tigre: ዐስር ወሐምስ (ʿäsr wäḥäms)
- Tigrinya: ዓሰርተ ሓሙሽተ (ʿasärtä ḥamuštä)
- Tok Pisin: fiftin, wanpela ten faiv
- Tongan: hongofulu mā nima
- Turkish: on beş (tr)
- Turkmen: on bäş (tk)
- Ukrainian: п’ятна́дцять (uk) (pʺjatnádcjatʹ)
- Urdu: پندرہ (pandrah)
- Uyghur: ئون بەش (ug) (on besh)
- Uzbek: oʻn besh (uz)
- Vietnamese: mười lăm (vi)
- Volapük: deglul, balselul (older term, obsolete)
- Waray-Waray: kinse
- Welsh: pymtheg (cy) (vigesimal, traditional), un deg pump (cy) (decimal)
- West Frisian: fyftjin (fy)
- Wolof: fukk ak juróom
- Yakut: уон биэс (uon bies)
- Yiddish: פֿופֿצן (fuftsn)
- Yup'ik: akimiaq
- Zazaki: pancês (diq), desupanc
- Zhuang: cib haj
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