- Afrikaans: twee
- Albanian: dy sq(sq)
- American Sign Language:

- Amharic: please add this translation if you can: (numeral: ፪)
- Amuzgo: bè
- Arabic: اثنان (’iθnān), اثنين (’iθnēn) (numeral: ٢)
- Egyptian: اتنين (’itneen)
- Moroccan: زوج (zuj)
- Aramaic:
- Syriac: ܬܪܝܢ (trēn) m., ܬܪܬܝܢ (tartēn) f.
- Hebrew: תרין (trēn) m., תרתין (tartēn) f.
- Armenian: երկու (yerku), երկուս (yerkus)
- Assamese: দুই (dui)
- Aymara: paya
- Basque: bi
- Bengali: দুই (dui) (numeral: ২)
- Bosnian: dva bs(bs)
- Breton: daou m., div f.
- Bulgarian: две (dve)
- Burmese: please add this translation if you can: (numeral: ၂)
- Catalan: dos m., dues f. ^
- Central Atlas Tamazight: ⵙⵉⵏ (sin) m.
- Cherokee: ᏔᎵ (tali)
- Chinese:
- Standard Chinese (Mandarin): 二, 两 (èr, liǎng) (numeral: 貳)
- Bai: 二 (ko)
- Cantonese: 二, 两 (yi6)
- Teochew: ri6, no6
- Eastern Hokkien (Min Dong) 二 (lang)
- Northern Hokkien (Min Bei) 二 (ni)
- Gan: 二 (ě)
- Wu: 二 (lia)
- Cornish: dew m., diw f.
- Crimean Tatar: eki
- Croatian: dvȃ hr(hr)
- Czech: dva, dvě
- Danish: to da(da)
- Dena'ina: nutiha
- Dutch: twee nl(nl)
- Erzya: кавто (kavto)
- Esperanto: du (1), dua (2)
- Estonian: kaks et(et)
- Faroese: tveir fo(fo) m., tvær fo(fo) f., tvey fo(fo) n.
- Archaic: tvá m., tógva m.
- Fijian: rua
- Finnish: kaksi (^)
- French: deux fr(fr)
- Ga: enyɔ̃, enyɔ
- Galician: dous
- Garífuna: biñá, biama, bián
- Georgian: ორი (ori)
- German: zwei, zwo ^
- Greek: δύο (dýo)
- Guaraní: mokõi
- Gujarati: please add this translation if you can: (numeral: ૨)
- Hawaiian: lua
- Hebrew: שתיים (štáyim) f. (used for numbering), שניים (šnáyim) m.
- Hindi: दो (do) (numeral: २)
- Hungarian: kettő hu(hu), két hu(hu)
- Icelandic: tveir is(is) m., tvær is(is) f., tvö is(is) n.
- Ido: du
- Ilocano: dua
- Indonesian: dua id(id)
- Interlingua: duo
- Irish: dó, (when counting objects) dhá, (when counting people) beirt
- Italian: due it(it)
- Japanese: 二 (に, ni), 二つ (ふたつ, futatsú)
- Kalaallisut: marluk
- Kannada: please add this translation if you can: (numeral: ೨)
- Karelian: kaksi
- Khmer: ពីរ (pī) (numeral: ២)
- Komi: кык (kyk)
- Korean: 둘 (dul) / 두 (du); 이 (二, i)
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- Kurdish: du ku(ku), دو ku(ku)
- Lao: ສອງ lo(lo) (sööng) (numeral: ໒)
- Latin: duo m. and n.; duae f.
- Latvian: divi lv(lv)
- Lithuanian: du lt(lt) m., dvi lt(lt) f.
- Livonian: kakš
- Lojban: re
- Malagasy: roa
- Malayalam: please add this translation if you can: (numeral: ൨)
- Maltese: tnejn
- Manchu: juwe
- Manx: daa, ghaa
- Maori: rua mi(mi)
- Mapudungun: epu
- Marathi: दोन (dona)
- Mari: кокыт (kokyt)
- Maricopa: xvikk
- Marshallese: ruo
- Mongolian: please add this translation if you can: (numeral: ᠒)
- Nahuatl: ome
- Navajo: naaki
- Norwegian: to no(no)
- Novial: du
- O'odham: go:k
- Occitan: dos
- Old English: twēġen m., twā f/n
- Oriya: ଦୁଇ (dui) (numeral: ୨)
- Persian: دو (do) (numeral: ۲)
- Polish: dwa pl(pl)
- Portuguese: dois pt(pt) m., duas pt(pt) f.
- Punjabi: ਦੋ (dō) (numeral: ੨)
- Rohingya: dui
- Romanian: doi ro(ro) m., două ro(ro) f.
- Romany: dui
- Russian: два (dva) m. & n., две (dve) f., двое (dvóje, collective)
- Sami: guokte
- Sanskrit: द्वि dvi, द्वे (dve)
- Scottish Gaelic: dà (before nouns), dhà (free-standing)
- Serbian:
- Cyrillic: два
- Roman: dva
- Sindhi: ٻَه (ba)
- Sinhala: දෙක (dheka)
- Slovak: dvaja, dva, dve
- Slovene: dve, dva
- Spanish: dos es(es)
- Swedish: två (^)
- Tachelhit: sin m., snat f.
- Tagalog: dalawá
- Tamil: please add this translation if you can: (numeral: ௨)
- Tatar: ике tt(tt), ike tt(tt)
- Telugu: రెండు (remddu) (numeral: ౨)
- Tetum: rua
- Thai: สอง (sááwng) (numeral: ๒)
- Tibetan: please add this translation if you can: (numeral: ༢)
- Tok Pisin: tupela
- Tupinambá: mokõî
- Turkish: iki tr(tr)
- Tzutujil: ka’i
- Ukrainian: два (dva) m., дві (dvi) f., двоє (dvóje, collective), двійко (dvíjko, colloquial), двієчко (dvíječko, colloquial diminutive)
- Urdu: دو (do)
- Veps: kakś
- Vietnamese: hai vi(vi)
- Votic: kahsi / кахси
- Võro: katś
- Walloon: deus
- Welsh: dau cy(cy) m., dwy cy(cy) f.
- West Frisian: twa
- Western Apache: naki
- Yiddish: צוויי yi(yi) (tsvey)
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