- Aari: qaskén
- Abaza: гӏвба (ʿvbā)
- Abkhaz: ҩба (ʿ°bā)
- Adyghe: тӏу (ṭ°)
- Afrikaans: twee (af)
- Ainu: ツ゜ (tu)
- Akkadian: 𒁹𒁹 (šina)
- Albanian: dy (sq)
- Alutiiq: mal'uk
- American Sign Language:
 - Amharic: ሁለት (am) (hulät) (numeral: ፪ (2))
- Amuzgo: bè
- Western Apache: nakih
- Arabic: اِثْنَانِ du (iṯnāni), (numeral: ٢ (2))
- Egyptian Arabic: اتنين (itnēn)
- Moroccan Arabic: جوج (jūj), تنين (tnīn)
- Aragonese: dos
- Aramaic:
- Hebrew: תרין m (trēn), תרתין f (tartēn)
- Syriac: ܬܪܝܢ m (trēn), ܬܪܬܝܢ f (tartēn)
- Western Neo-Aramaic: ܐܬܪ m (ʾeṯər), ܬܪܬ̤ f (ṯarč)
- Armenian: երկու (hy) (erku), երկուս (erkus)
- Aromanian: doi (roa-rup)
- Asháninka: apite
- Assamese: দুই (dui) (numeral: ২)
- Asturian: dos (ast)
- Aymara: paya (ay)
- Azerbaijani: iki (az)
- Balinese: dadua
- Bashkir: ике (ike)
- Basque: bi (eu)
- Bay Miwok: osha
- Belarusian: два m (dva), (collective) дво́е (dvóje), дво́йка f (dvójka)
- Bengali: দুই (bn) (dui) (numeral: ২)
- Bikol Central: duwa (bcl)
- Brahui: iraŧ
- Breton: daou (br) m, div (br) f
- Brunei Malay: dua
- Bulgarian: две (bg) (dve)
- Burmese: နှစ် (my) (hnac) (numeral: ၂ (my) (2))
- Buryat: хоёр (xojor)
- Catalan: dos (ca) m, dues (ca) f
- Cebuano: duha
- Central Atlas Tamazight: ⵙⵉⵏ m (sin)
- Central Dusun: duo
- Central Sierra Miwok: ˀoṭí·-
- Chamicuro: ma'pojta
- Chechen: шиъ (šiʾ)
- Chepang: नीस्
- Cherokee: ᏔᎵ (tali)
- Chichewa: wiri
- Chinese:
- Cantonese: 二 (yue) (yi6), 兩, 两 (loeng5)
- Dungan: эр (er), лён (li͡on)
- Gan: 二 (eo5)
- Hakka: 二 (ngi), 兩, 两 (lióng)
- Mandarin: 二 (zh) (èr), 兩 (zh), 两 (zh) (liǎng)
- Min Dong: 二 (nê), 兩, 两 (lâng)
- Min Nan: 二 (zh-min-nan) (jī, lī), 兩 (zh-min-nan), 两 (nn̄g)
- Teochew: 二 (zh-min-nan) (ri6), 兩 (zh-min-nan), 两 (no6)
- Wu: 二 (nyi, hher), 兩, 两 (lian)
- Chuanqiandian Cluster Miao: lf (Dananshan Miao)
- Chukchi: ӈирэӄ (ṇirėq)
- Chuukese: ru, turu, rue-, ruechö, ruefou, ruömön
- Chuvash: иккӗ (ikkĕ), икӗ (ikĕ), ик (ik)
- Cornish: dew m, diw f
- Corsican: dui (co)
- Cree: nîso
- Crimean Tatar: eki
- Czech: dva (cs), dvě (cs), (collective) dvoje (cs)
- Dalmatian: doi
- Danish: to (da)
- Dena'ina: nutiha
- Dhivehi: ދޭ (dē)
- Dolgan: икки (ikki)
- Dutch: twee (nl)
- Dzongkha: གཉིས (gnyis)
- Eastern Mari: кокыт (kokyt)
- Elfdalian: twer m, twär f, tau n, twå
- Erzya: кавто (kavto)
- Esperanto: du (eo), dua (eo)
- Estonian: kaks (et)
- Faroese: tveir m, tvær f, tvey n
- Fijian: rua (fj)
- Finnish: kaksi (fi)
- French: deux (fr)
- Friulian: doi, dôs
- Ga: enyɔ̃, enyɔ
- Galician: dous (gl), dúas f
- Garifuna: biñá, biama, bián
- Ge'ez: ክልኤቱ m (kəlʾetu), ክልኤቲ f (kəlʾeti) (numeral: ፪ (2))
- Georgian: ორი (ka) (ori)
- German: zwei (de) (zwo (de), zween)
- Gothic: 𐍄𐍅𐌰𐌹 (twai)
- Greek: δύο (el) (dýo)
- Ancient: δύο (dúo), β΄ (b΄) (numeral)
- Greenlandic: marluk (kl)
- Guaraní: mokõi
- Gujarati: બગડો (bagḍo) (numeral: ૨)
- Hadza: pie
- Haitian Creole: de
- Hausa: biyu
- Hawaiian: lua, ʻelua
- Hebrew: שתיים \ שְׁתַּיִם f (sh'táyim) (used for numbering), שניים \ שְׁנַיִם m (sh'náyim)
- Hindi: दो (hi) (do) (numeral: २)
- Hopi: lööyöʼ
- Hungarian: kettő (hu), két (hu)
- Hunsrik: zweu
- Iban: dua
- Icelandic: tveir (is) m, tvær (is) f, tvö (is) n
- Ido: du (io)
- Ilocano: dua
- Indonesian: dua (id)
- Interlingua: duo (ia)
- Irish: dó (ga), (when counting objects) dhá, (when counting people) beirt
- Old Irish: dá
- Istriot: dui, duj
- Istro-Romanian: doi
- Italian: due (it)
- Japanese: 二 (ja) (ni), 二つ (ja) (futatsu)
- Javanese: loro (jv), ro (jv), roro (jv)
- Jersey Dutch: twî
- Kabardian: тӏу (ṭw)
- Kalmyk: хойр (xoyr)
- Kannada: ಎರಡು (kn) (eraḍu) (numeral: ೨ (kn) (2))
- Kapampangan: addua (pam)
- Karachay-Balkar: эки (eki)
- Karaim: ėki
- Karakhanid: اِكّٖى (ikkī)
- Karelian: kaksi
- Kashubian: dwa
- Kazakh: екі (kk) (eki)
- Khakas: ікі (íkí)
- Khanty: (Kazym) кӑт (kăt), кӑтн (kătn)
- Khmer: ពីរ (km) (pii) (numeral: ២ (2))
- Kikuyu: ĩrĩ class 2/4/6/13, igĩrĩ class 8/10
- Komi-Zyrian: кык (kyk)
- Korean: 둘 (ko) (dul), (adjective) 두 (ko) (du), 이 (ko) (i)
- Kumyk: эки (eki)
- Kurdish:
- Kurmanji: du (ku)
- Sorani: دوو (dû)
- Kyrgyz: эки (ky) (eki)
- Ladin: doi
- Lakota: núŋpa
- Lao: ສອງ (sǭng) (numeral: ໒ (2))
- Latgalian: div
- Latin: duo (la) m or n, duae (la) f
- Latvian: divi (lv), divas
- Lithuanian: du (lt) m, dvi (lt) f
- Livonian: kakš
- Low German:
- Dutch Low Saxon: twei
- German Low German: twei
- Luxembourgish: zwee (lb), zwéin (lb), zwou (lb)
- Lü: ᦉᦸᧂ (ṡoang) (numeral: ᧒)
- Macedonian: два (mk) (dva)
- Malagasy: roa (mg)
- Malay:
- Rumi: dua (ms), dwi
- Jawi: دوا, دوي
- Malayalam: രണ്ടു (ml) (raṇṭu), രണ്ട് (ml) (raṇṭŭ) (numeral :൨)
- Maltese: tnejn (mt) m or f
- Manchu: ᠵᡠᠸᡝ (juwe) (numeral: ᠒)
- Mangarevan: rua
| | - Mansi: китыг (kityg)
- Manx: daa, ghaa
- Maori: rua (mi)
- Mapudungun: epu
- Marathi: दोन (mr) (don) (numeral: २)
- Maricopa: xavik, hvik
- Marshallese: ruo
- Megleno-Romanian: doi
- Mi'kmaq: dabu
- Minangkabau: duo (min)
- Mirandese: dous
- Mongolian: хоёр (mn) (hojor), ᠬᠣᠶᠠᠷ (qoyar) (numeral: ᠒)
- Montagnais: nishᵘ
- Muong: hàl
- Mòcheno: zboa
- Nahuatl: ome (nah)
- Nama: ǀgam
- Nauruan: aro
- Navajo: naaki
- Nepali: दुई (ne) (duī) (numeral: २)
- Ngazidja Comorian: -ili
- Niuean: ua
- North Frisian: (Mooring) twäär m tou f or n, (Föhr-Amrum, Helgoland, Sylt) tau
- North Marquesan: úa
- Northern Ohlone: uṯhin
- Northern Thai: ᩈᩬᨦ, ᩈᩬᩙ
- Norwegian: to (no)
- Novial: du
- O'odham: go꞉k
- Occitan: dos (oc) m, doas (oc) f
- Ojibwe: niizh
- Okinawan: 二 (ni), 二ち (tāchi)
- Old Church Slavonic: дъва m (dŭva)
- Old English: twēġen m, twā f or n
- Old Frisian: twā
- Old Turkic: 𐰚𐰃 (eki)
- Oriya: ଦୁଇ (or) (dui) (numeral: ୨ (2))
- Oscan: 𐌃𐌖𐌔 (dus)
- Ossetian: дыууӕ (dywwæ)
- Ottoman Turkish: ایكی (iki)
- Papiamentu: dos
- Pashto: دوه (ps) (dwa)
- Pennsylvania German: zwee, zvay
- Persian: دو (fa) (do) (numeral: ۲)
- Pipil: ume
- Polish: dwa (pl) n
- Portuguese: dois (pt) m, duas (pt) f
- Punjabi: ਦੋ (do) (numeral: ੨ (2))
- Purepecha: tsimani
- Quechua: iskay (qu), iskai, işkai
- Rajasthani: please add this translation if you can
- Rapa Nui: rua
- Rarotongan: rua
- Ratahan: rua
- Rohingya: dui
- Romani: dui
- Kalo Finnish Romani: dui
- Romanian: doi (ro) m, două (ro) f
- Romansch: dus m, duas f
- Russian: два (ru) m or n (dva), две (ru) f (dve), дво́е (ru) (dvóje) (collective), дво́йка (ru) f (dvójka)
- Rusyn: два (dva)
- S'gaw Karen: ခံ (khi)
- Sami:
- Inari: kyehti
- Northern: guokte
- Skolt: kue´htt
- Southern: göökte
- Samoan: lua (sm)
- Sanskrit: द्वि (sa) (dvi)
- Santali: ᱵᱟᱨ (bar)
- Sarcee: ákíyi
- Saterland Frisian: two
- Scots: twa
- Scottish Gaelic: dà (before nouns), dhà (free-standing), (persons) dithis f
- Semai: due
- Serbo-Croatian:
- Cyrillic: два̑
- Roman: dvȃ
- Shan: သွင် (sǒang) (numeral: ႒)
- Shor: ийги (iygi)
- Sichuan Yi: ꑍ (nyip)
- Sicilian: dui (scn)
- Sikkimese: ཉི (nyi)
- Sindhi: ٻَه (sd) (ba)
- Sinhalese: දෙක (si) (deka)
- Slovak: dvaja, dva (sk), dve
- Slovene: dvá (sl), (when counting) dvé (sl)
- Slovincian: dvȧ̃
- Somali: labba
- Sorbian:
- Lower Sorbian: dwa
- Upper Sorbian: dwaj (hsb) m, dwě f or n
- South Marquesan: úa
- Southern Altai: эки (eki)
- Southern Ohlone: utsgin
- Spanish: dos (es)
- Sumerian: 𒁹𒁹 (min)
- Swahili: wili
- Swazi: bili
- Swedish: två (sv)
- Tagalog: dalawa (tl)
- Tahitian: piti, (when counting objects) rua, (when counting people) to'opiti
- Tai Dam: ꪎꪮꪉ
- Tai Nüa: ᥔᥩᥒᥴ (sóang)
- Tajik: ду (tg) (du)
- Talysh: (Asalemi) ده (də)
- Tamil: இரண்டு (ta) (iraṇṭu) (numeral: ௨ (௨))
- Taos: wí’iną
- Tashelhit: sin m, snat f
- Tatar: ике (tt) (ike)
- Telugu: రెండు (te) (reṇḍu) (numeral: ౨ (te) (2))
- Tetum: rua
- Thai: สอง (th) (sɔ̌ɔng) (numeral: ๒ (th) (2))
- Tibetan: གཉིས (gnyis) (numeral: ༢ (2))
- Tigre: ክልኦት m (kəlʾot), ክልኤ f (kəlʾe) (numeral: ፪ (2))
- Tigrinya: ክልተ (ti) (kəltä) (numeral: ፪ (2))
- Timugon Murut: duo
- Tlingit: déix̱, dáx̱náx̱
- Tocharian A: wu, we
- Tocharian B: wi
- Tok Pisin: tupela
- Tongan: ua
- Tupinambá: mokõî
- Turkish: iki (tr)
- Turkmen: iki (tk)
- Tuvaluan: lua
- Tz'utujil: ka’i
- Udmurt: кык (kyk)
- Ukrainian: два (uk) m (dva), дві f (dvi), дво́є (dvóje) (collective), дві́йко (dvíjko)(colloquial), дві́єчко (dvíječko) (colloquial diminutive), дві́йка (uk) f (dvíjka)
- Umbrian: 𐌕𐌖𐌚 (tuf)
- Unami: nisha
- Urdu: دو (do)
- Uyghur: ئىككى (ug) (ikki)
- Uzbek: ikki (uz)
- Venetian: do (vec), due (vec)
- Veps: kaks'
- Vietnamese: hai (vi)
- Vilamovian: cwe
- Volapük: tel (vo)
- Votic: kahsi, кахси
- Võro: katś
- Wakhi: bu
- Walloon: deus (wa)
- Waray-Waray: duha
- Welsh: dau (cy) m, dwy (cy) f
- West Frisian: twa (fy)
- Western Apache: naki, nakih, nakih
- White Hmong: ob
- Winnebago: nųųp
- Wiradhuri: bula
- Wolof: ñaar (wo)
- Xhosa: bini
- Yagara: budela, burla
- Yagnobi: ду
- Yakut: икки (ikki)
- Yao: wili
- Yiddish: צוויי (tsvey)
- Yoruba: please add this translation if you can
- Yup'ik: malruk
- Yámana: kampeipi
- Zazaki: di
- Zealandic: tweê, tweêje (in counting)
- Zhuang: ngeih, ŋeiƅ (Sawndip 二); song, soŋ (雙, 双)
- Zulu: bili
- Zuni: kwili
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