- Albanian: ungji, xhaxha (sq), dajë (sq)
- Amharic: ኣጎት (ʾagot)
- Arabic: (father's brother) عَمّ (ar) m (ʕamm), (mother's brother) خَال (ar) m (ḵāl), (husband of father's sister) زَوْجُ العَمّة m (zawju l-ʕamma), (husband of mother's sister) زَوْجُ الخالة m (zawju l-ḵāla)
- Armenian: հորեղբայր (hy) (horeġbayr) (paternal), քեռի (hy) (kʿeṙi) (maternal)
- Assamese: খুৰা (khura) (father's younger brother), বৰদেউতা (borodeuta) (father's elder brother), মোমাই (mümai) (mother's brother)
- Assyrian Neo-Aramaic: (father's brother) ܥܲܡܵܐ m (ʿamā), (mother's brother) ܚܵܠܵܐ m (ḥālā), (husband of father's sister) ܓܲܒ݂ܪ ܥܲܡܬܵܐ m (gaḇr ʿamtā), (husband of mother's sister) ܓܲܒ݂ܪ ܚܵܠܬܵܐ m (gaḇr ḥāltā)
- Asturian: tíu (ast) m
- Azerbaijani: əmi (az) (father's brother), dayı (az) (mother's brother)
- Bakhtiari: (paternal) کاکا (kâkâ)
- Baluchi: ناکو (náko), ماما (mámá), کاکہ (káka)
- Basque: osaba (eu)
- Belarusian: дзя́дзька m (dzjádzʹka), дзя́дзя m (dzjádzja)
- Bengali: (mother's brother) মামা (bn) (mama), (father's brother) চাচা (bn) (caca), (husband of father's sister) ফুফা (bn) (phupha), (husband of mother's sister) খালু (bn) (khalu)
- Breton: eontr (br) m
- Bulgarian: (paternal) чи́чо (bg) m (číčo), стри́ко m (stríko) (regional, non-standard), (maternal) ву́йчо (bg) m (vújčo), калеко (bg) m (kaleko) (regional), свако (bg) m (svako) (last two may also apply to the husband of the paternal aunt)
- Burmese: ဘကြီး (my) (bha.kri:) (elder brother of one's father), ဘထွေး (my) (bha.htwe:) (younger brother of one's father)
- Carpathian Rusyn: у́йко m (újko)
- Catalan: oncle (ca) m, tio (ca) m, tiet (ca)
- Central Dusun: mamai
- Chechen: ваша (vaša)
- Cherokee: ᎡᏚᏥ (edutsi)
- Chichewa: tsibweni
- Chinese:
- Cantonese: 伯伯 (baak3 baak3) (father's elder brother), 叔叔 (suk1 suk1) (father's younger brother), 姑丈 (yue) (gu1 zoeng6-2) (father's brother-in-law), 舅父 (kau3 fu6-2) (mother's brother), 姨丈 (ji4 zoeng6-2) (mother's brother-in-law)
- Eastern Min: (please verify) 依伯 (yi bat) (father's older brother)
- Hakka: 阿伯 (â-pak) (father's elder brother), 阿叔 (â-suk) (father's younger brother), 阿舅 (â-khiû) (mother's brother), 母舅 (mû-khiû) (mother's brother), 姑丈 (kû-chhông) (father's brother-in-law), 姨丈 (yì-chhông) (mother's brother-in-law)
- Hokkien: 阿伯 (zh-min-nan) (a-peh) (father's elder brother), 阿叔 (zh-min-nan) (a-chek) (father's younger brother), 阿舅 (zh-min-nan) (a-kū) (mother's brother), 母舅 (bú-kū) (mother's brother), 阿丈 (zh-min-nan) (a-tiūⁿ) (parent's brother-in-law), 姑丈 (zh-min-nan) (ko͘-tiūⁿ) (father's brother-in-law), 姨丈 (î-tiūⁿ) (mother's brother-in-law)
- Mandarin: 伯父 (zh) (bófù) (father's elder brother, formal), 伯伯 (zh) (bóbo) (father's elder brother, informal), 叔父 (zh) (shúfù) (father's younger brother, formal), 叔叔 (zh) (shúshu) (father's younger brother, informal), 姑父 (zh) (gūfù) (father's brother-in-law), 姑丈 (zh) (gūzhàng) (father's brother-in-law), 舅父 (zh) (jiùfù) (mother's brother, formal), 舅舅 (zh) (jiùjiu) (mother's brother, informal), 姨父 (zh) (yífù) (mother's brother-in-law), 姨丈 (zh) (yízhàng) (mother's brother-in-law), 姨夫 (zh) (yífū) (mother's brother-in-law)
- Teochew: 阿伯 (a1 bêh4) (father's elder brother), 阿叔 (a1 zêg4) (father's younger brother), 阿舅 (a1 gu6) (mother's brother), 阿丈 (a1 diên6, a1 dion6) (parent's brother-in-law)
- Chinook Jargon: tot
- Crimean Tatar: dayı
- Czech: strýc (cs) m
- Dalmatian: naul m
- Danish: onkel (da) c, farbror (da) c (paternal), morbror (da) c (maternal)
- Dutch: oom (nl) m, (Flemish) nonkel (nl) m
- Esperanto: onklo (eo)
- Estonian: onu (et)
- Ewe: tɔgã (father's elder brother), tɔɖe (father's younger brother), wɔfa (maternal)
- Finnish: setä (fi) (paternal), setäpuoli (father's brother-in-law), eno (fi) (maternal), enopuoli (mother's brother-in-law)
- French: oncle (fr) m, tonton (fr) m (informal)
- Friulian: barbe
- Galician: tío m
- Georgian: ბიძა (ka) (biʒa), ძია (ʒia), ბიძია (biʒia)
- German: Onkel (de) m, (archaic) Oheim (de) m
- Gooniyandi: ngaboo
- Greek: θείος (el) m (theíos)
- Ancient: θεῖος m (theîos) (paternal or maternal), πάτρως m (pátrōs) (paternal), μήτρως m (mḗtrōs) (maternal)
- Gunwinggu: ngabba (paternal), ngadjadj (maternal)
- Haitian Creole: tonton, monnonk
- Hawaiian: makua kāne, ʻanakala
- Hebrew: דּוֹד (he) m (dod)
- Hindi: चाचा (hi) m (cācā) (father's younger brother), ताया (hi) m (tāyā) (father's elder brother), काका (hi) (kākā) (paternal), मामा (hi) (māmā) (maternal), अंकल (hi) m (aṅkal) (generic)
- Hungarian: nagybácsi (hu)
- Icelandic: föðurbróðir (is) m (paternal), móðurbróðir (is) m (maternal)
- Ido: onklulo (io)
- Indonesian: paman (id), om (id)
- Ingrian: däädä, eno (maternal), setä (paternal)
- Interlingua: oncle
- Irish: uncail m
- Italian: zio (it) m
- Japanese: 伯父 (ja) (oji) (parent's brother, esp. older brother); 伯父貴 (ojiki) (parent's older brother); 叔父 (ja) (oji, shukufu), 叔父貴 (ojiki) (parent's younger brother)
- Kabyle: zizi m
- Kapampangan: bapa
- Kashmiri: پیٔتٕر (ks) (pyạtụr) (father’s brother), پۄپھُو (ks) (pọphuv) (father's brother-in-law), مام (ks) (mām) (mother's brother), ماسُو (ks) (māsuv) (mother's brother-in-law)
- Kazakh: немере аға (nemere ağa), ağa (paternal), nağaşı (maternal)
- Khoekhoe: ǁnaosab
- Korean: 아저씨 (ko) (ajeossi), 삼촌 (ko) (samchon)
- Krisa: (father's elder brother) tani baʼ, (father's younger brother) tani pung, (maternal) wini
- Kumyk: атасыны агъасы (atasını ağası), анасыны агъасы (anasını ağası), атасыны иниси (atasını inisi), анасыны инеси (anasını inesi)
- Kurdish:
- Central Kurdish: مام (ckb) (mam) (paternal), خاڵ (ckb) (xall) (maternal)
- Northern Kurdish: (paternal) mam (ku), ap (ku), (maternal) xal (ku)
- Lao: ລຸງ (lung) (older)
- Latgalian: dzedzeits
- Latin: patruus (la) m (paternal), avunculus (la) m (maternal), thius
- Latvian: tēvocis (lv), (paternal) tēva brālis, (maternal) mātes brālis
- Lithuanian: dėdė (lt)
- Macedonian: те́тин m (tétin), чи́чко (mk) m (číčko), ву́јко m (vújko), стри́ко m (stríko)
- Malay: pakcik, bapa saudara
- Malayalam: അമ്മാവൻ (ammāvaṉ), മാമൻ (māmaṉ), (father's elder brother) വല്യച്ചൻ (valyaccaṉ), (father's younger brother) ചെറിയച്ചൻ (ceṟiyaccaṉ)
- Maltese: ziju (mt) m
- Maori: matua kēkē
- Marathi: (mother's brother) मामा (mr) m (māmā), (father's brother) काका m (kākā)
- Maricopa: nkwii
- Melpa: apa
- Meriam: bab
- Middle English: uncle, em
- Minangkabau: mamak (min) (mother's brother)
- Mòcheno: barba m
- Mongolian: авга ах (avga ax) (older brother of father side), нагац ах (nagac ax) (older brother of mother side), авга эрэгтэй дүү (avga eregtej düü) (younger brother of father side), нагац эрэгтэй дүү (nagac eregtej düü) (younger brother of mother side)
- Montana Salish: smamáʔ
- Nanai: эчэкэ (ečeke), гусин (gusin)
- Navajo: adáʼí (maternal uncle, male speaker), ayáázh (maternal uncle, female speaker), abízhí (paternal uncle), azhéʼéyázhí (paternal uncle)
- Norman: aonclle m (Guernsey), oncl'ye m (Jersey)
- North Frisian: Oom c (Sylt)
- Northern Ohlone: 'et̄e
- Northern Sami: čeahci (father's younger brother), eahki (father's elder brother), eanu (mother's brother), máhka (relative's husband)
- Norwegian:
- Bokmål: onkel (no) m, farbror m (paternal), morbror m (maternal)
- Nynorsk: please add this translation if you can
- Occitan: oncle (oc), quenque
- Old English: fædera m (paternal), ēam m (maternal)
- Old French: oncle m
- Oromo: eessuma, wasiila
- Ottoman Turkish: عموجه (ʿamuca) (paternal uncle), دایی (dayı) (maternal uncle), عمی (ämi) (paternal)
- Papiamentu: tio
- Pashto: تره (ps) m (paternal), ماما (ps) m (maternal)
- Pennsylvania German: Onkel m
- Persian:
- Dari Persian: کاکا (fa) (kākā) (paternal), ماما (fa) (māmā) (maternal), کاکو (fa) (kākō) (dialectal, rare)
- Iranian Persian: عمو (fa) ('amu) (paternal), دائی (fa) (dâ'i) (maternal), خالو (fa) (xâlu) (rare), افدر (fa) (afdar), اودر (fa) (owdar)
- Pitjantjatjara: mama maḻatja (parent’s younger brother), mama puḻka (parent’s older brother)
- Plautdietsch: Onkel (nds) m
- Polish: stryj (pl) m pers, stryjek (pl) m pers, wuj (pl) m pers, wujek (pl) m pers
- Portuguese: tio (pt) m
- Quechua: qaka, kaka (maternal), kaku (maternal), yaya (paternal)
- Romani: kak m
- Romanian: unchi (ro) m
- Romansch: aug m, barba
- Russian: дя́дя (ru) m (djádja), дя́дька (ru) m (djádʹka) (may be unfriendly), дя́дюшка (ru) m (djádjuška)
- Sanskrit: (maternal) मातुल (sa) m (mātula), (paternal) पितृव्य (sa) m (pitṛvya)
- Sardinian: tiu, ciu, tziu
- Saterland Frisian: Oom
- Scots: uncle, eme (maternal), mither-brither (maternal)
- Scottish Gaelic: bràthair-athar m (parental), bràthair-màthar m (maternal), uncail m (with proper name)
- Serbo-Croatian:
- Cyrillic: (paternal) стриц m, чичa m, амиџа m (regional, non-standard), (parent's brother-in-law) тетак m, течa m, течо m, (maternal) ујак m, даиџа m (regional, non-standard)
- Roman: (paternal) stric (sh) m, čiča (sh) m, amidža (sh) m (regional, non-standard), (parent's brother-in-law) tetak (sh) m, teča (sh) m, tečo m, (maternal) ujak (sh) m, daidža (sh) m (regional, non-standard)
- Seri: (younger) aaitz
- Shan: လုင်း (shn) (lúng) (older)
- Sicilian: ziu (scn) m, zu (scn) m
- Sidamo: wosiila
- Sinhalese: මාමා (māmā)
- Slovak: strýko
- Slovene: stric (sl) m
- Sorbian:
- Lower Sorbian: wujk m
- Southern Altai: ака (aka), тай (tay), таай (taay)
- Southern Sierra Miwok: ka·ka·
- Spanish: tío (es) m
- Sundanese: amang (su), mamang
- Swedish: onkel (sv) c, farbror (sv) c (paternal), (father's brother-in-law) far (sv)s svåger (sv) c, ingift (sv) farbror (sv) c, morbror (sv) c (maternal), (mother's brother-in-law) mor (sv)s svåger (sv) c, ingift (sv) morbror (sv) c
- Tagalog: tito (tl), tiyo, tiyuhin
- Talysh: (please verify) عمو (amu) (Asalemi)
- Tamil: (mama), பெரியப்ப (periyappa) (parent’s elder brother), சிதப்ப (citappa) (parent’s younger brother)
- Thai: ลุง (th) (lung) (both elder brother), อา (th) (aa) (father’s younger brother), น้า (th) (náa) (mother’s younger brother)
- Tibetan: ཨ་ཞང (a zhang) (maternal uncle), ཨ་ཁུ (a khu) (paternal uncle)
- Torres Strait Creole: ankel
- Tumbuka: sibweni
- Turkish: amca (tr) (paternal), dayı (tr) (maternal), enişte (tr) (in-law)
- Turkmen: aga (tk) (paternal), daýy (maternal)
- Tuvan: аккызы (akkızı), даайы (daayı)
- Ukrainian: дя́дько m (djádʹko)
- Urdu: (father's younger brother) چچا m (cācā)
- Venetian: sio m, zhio m, barba (vec) f
- Vietnamese: bác (vi) (North, elder), chú (vi) (North, younger), cậu (vi) (South, both elder and younger)
- Volapük: hiter (vo), ziom (vo)
- Welsh: ewythr (cy) m, ewythredd (cy) m pl
- West Frisian: omme, omke m
- Yámana: tanowa
- Yiddish: פֿעטער m (feter)
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