- Afrikaans: moordenaar
- Alabama: aatiibi
- Albanian: vrasës (sq) m, vrasëse (sq) f
- Arabic: قَاتِل (ar) m (qātil), قَاتِلَة f (qātila)
- Armenian: մարդասպան (hy) (mardaspan)
- Asturian: asesín m
- Azerbaijani: qatil (az)
- Bashkir: ҡатил (qatil)
- Belarusian: забо́йца (be) m or f (zabójca)
- Bengali: খুনী (bn) (khuni), কাতেল (bn) (qatel)
- Breton: lazher (br) m
- Bulgarian: уби́ец (bg) m (ubíec), уби́йца f (ubíjca)
- Burmese: လူသတ်သမား (lusatsa.ma:)
- Catalan: assassí (ca) m, assassina (ca) f
- Cherokee: ᎠᏓᎯᎯ (adahihi)
- Chickasaw: hattak-abi'
- Chinese:
- Cantonese: 兇手 / 凶手 (hung1 sau2), 殺人犯 / 杀人犯 (saat3 jan4 faan6-2), 殺手 / 杀手 (saat3 sau2)
- Hokkien: 殺手 / 杀手 (zh-min-nan) (sat-chhiú)
- Mandarin: 兇手 / 凶手 (zh) (xiōngshǒu), 殺人犯 / 杀人犯 (zh) (shārénfàn), 殺手 / 杀手 (zh) (shāshǒu)
- Choctaw: abi
- Crimean Tatar: qatil
- Czech: vrah (cs) m, vražedkyně (cs) f
- Danish: morder (da) c, morderske c (female)
- Dutch: moordenaar (nl) m, moordenaarster f, moordenares (nl) f
- Esperanto: murdinto, murdintino (female)
- Estonian: mõrtsukas
- Finnish: murhaaja (fi)
- French: meurtrier (fr) m, meurtrière (fr) f, assassin (fr) m, assassine (fr) f
- Old French: murtrier m
- Galician: asasino (gl) m, asasina f
- Georgian: მკვლელი (mḳvleli)
- German: Mörder (de) m, Mörderin (de) f
- Greek: δολοφόνος (el) m or f (dolofónos), δολοφόνισσα (el) f (dolofónissa), φονιάς (el) m (foniás), φόνισσα (el) f (fónissa)
- Ancient: φονεύς m (phoneús), φονεύτρια f (phoneútria)
- Gujarati: હત્યારો (hatyāro)
- Hebrew: רוצח \ רוֹצֵחַ (he) m (rotséakh), רוצחת \ רוֹצַחַת f (rotsákhat)
- Hindi: हत्यारा (hi) m (hatyārā), ख़ूनी m (xūnī), क़ातिल m (qātil)
- Hungarian: gyilkos (hu)
- Icelandic: morðingi m
- Indonesian: pembunuh (id)
- Ingrian: murhamees, päänikka
- Italian: assassino (it) m, assassina (it) f
- Japanese: 人殺し (ja) (ひとごろし, hitogoroshi), 殺人者 (ja) (さつじんしゃ, satsujinsha)
- Kalmyk: алач (alaç)
- Kannada: ಕೊಲೆಗಾರ (kn) (kolegāra)
- Kazakh: қанішер (qanışer), қаныпезер (qanypezer)
- Khmer: ឃាតករ (khiət kɑɑ), អ្នកសម្លាប់ (nĕək sɑmlap)
- Korean: 살인자(殺人者) (ko) (sarinja)
- Kurdish:
- Northern Kurdish: qatil (ku) m, mêrkuj (ku) m, kujer (ku) m
- Kyrgyz: өлтүргүч (ky) (öltürgüc), өлтүрүүчү (ky) (öltürüücü)
- Lao: ຄາດຕະກອນ (khāt ta kǭn)
- Latgalian: slapkauņs m
- Latin: homicīda m or f, occīsor m, occītrīx f, interfector m, interfectrīx f
- Latvian: slepkava m or f
- Lithuanian: žmogžudys m, žmogžudė f
- Luxembourgish: Mäerder m, Mäerderin f
- Macedonian: убиец m (ubiec), катиљ m (katilj) (colloquial)
- Malay: pembunuh (ms)
- Malayalam: കൊലപാതകി (ml) (kolapātaki)
- Maori: kaikōhuru
- Mongolian: алуурчин (mn) (aluurčin)
- Norman: meurtriyi m
- Northern Sami: olmmošgoddi
- Norwegian:
- Bokmål: morder m, morderske m or f (female), drapsperson m, drapsmann m, drapskvinne m or f (female)
- Nynorsk: mordar m, morderske f, drapsperson m, drapsmann m, drapskvinne f
- Old East Slavic: головьникъ m (golovĭnikŭ)
- Old English: manslaga m, slaga m
- Old Norse: morðari m
- Old Polish: głównik
- Pashto: قاتل (ps) m (qātél), خوني (ps) m or f (xuní)
- Persian: قاتل (fa) (qâtel), آدمکش (fa) (âdamkoš)
- Plautdietsch: Merda m
- Polish: morderca (pl) m, morderczyni (pl) f, zabójca (pl) m, zabójczyni (pl) f
- Portuguese: assassino (pt) m, assassina (pt) f, homicida (pt) m or f
- Romanian: criminal (ro) m (false friend), criminală (ro) f
- Russian: уби́йца (ru) m or f (ubíjca), ки́ллер (ru) m (kíller) (hired), душегу́б (ru) m (dušegúb) (colloquial)
- Sanskrit: घातक (sa) m (ghātaka), ताडक (sa) m (tāḍaka)
- Scottish Gaelic: murtair m
- Serbo-Croatian:
- Cyrillic: у̀бица m (Bosnian, Serbian), у̀бојица m (Croatian)
- Roman: ùbica (sh) m (Bosnian, Serbian), ùbojica (sh) m (Croatian)
- Sinhalese: මිනීමරුවා (minīmaruwā)
- Slovak: vrah (sk) m, vrahyňa (sk) f
- Slovene: morilec (sl) m, morilka f
- Spanish: asesino (es) m, asesina (es) f, victimario m, victimaria f, matador (es) m, matadora (es) f
- Swahili: mwuaji class 1/2
- Swedish: mördare (sv) c, mörderska (sv) c (female)
- Tajik: қотил (qotil), кушанда (kušanda), одамкуш (odamkuš)
- Tamil: கொலைகாரன் (ta) (kolaikāraṉ)
- Tatar: үтерүче (tt) (üterüçe), катыйль (tt) (qatıyl’)
- Telugu: హంతకుడు (te) (hantakuḍu)
- Thai: ฆาตกร (th) (kâat-dtà-gɔɔn)
- Tocharian B: kauṣenta
- Turkish: katil (tr)
- Turkmen: ganhor
- Ukrainian: вби́вця m or f (vbývcja), уби́вця (uk) m or f (ubývcja), душогу́б m (dušohúb) (colloquial)
- Urdu: قاتل m (qātil), خونی m (xūnī)
- Uyghur: قاتىل (qatil), شۇمبەن (shumben)
- Uzbek: qotil (uz), odamkush (uz)
- Vietnamese: kẻ giết người
- Wiradjuri: baluubuunildaayn
- Yakut: өлөрүөхсүт (ölörüöqsüt)
- Yiddish: מערדער m (merder), רוצח m (rotseyekh), טויטשלאַגער m (toytshlager)
- Zulu: umbulali
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