- Abkhaz: Еқәыԥ (Ekʷəp)
- Afrikaans: Jakobus (af), Jaco, Jako
- Aghwan: 𐔺𐔰𐕄𐕒𐔱 (yaḳob)
- Arabic: جَاك m (jak), يَعْقُوب (ar) m (yaʕqūb), جَيْمْس m (jayms), جَايْمْز m (jaymz) (transliteration)
- Aragonese: Chaime
- Aramaic:
- Syriac: ܝܥܩܘܒ
- Armenian: Հակոբ (hy) (Hakob)
- Old Armenian: Յակոբ (Yakob)
- Azerbaijani: Ceyms
- Bashkir: Яҡуп (Yaqup)
- Basque: Jakes
- Bavarian: Jackl
- Belarusian: Я́каў m (Jákaŭ)
- Bengali: জ্যাক (jêk)
- Breton: Jagu, Jakez (br)
- Bulgarian: Яков m (Jakov), Джак m (Džak)
- Catalan: Jaume (ca), Xaume
- Cebuano: Santiago
- Chinese:
- Cantonese: 雅各 (ngaa5 gok3)
- Eastern Min: 雅各 (Ngā-gáuk)
- Mandarin: 傑克/杰克 (zh) (Jiékè)
- Coptic: ⲓⲁⲕⲱⲃ (iakōb)
- Cornish: Jago
- Corsican: Ghjàcumu (co)
- Czech: Jakub (cs) m
- Danish: Jakob (da), Jacob, Jack
- Dutch: Jaap (nl), Jakob (nl), Jacob (nl), Jacobus
- Esperanto: Jakobo
- Estonian: Jaak
- Ewe: Yakob m
- Faroese: Jákup (fo), Jakob, Jacob
- Finnish: Jaakko (fi)
- Franco-Provençal: Jâque
- French: Jacques (fr), Jacob (fr), Jack (fr)
- Friulian: Jacum
- Galician: Iago (gl), Xacobe (gl), Xácome (gl), Xaime (gl), Santiago (gl) m
- Georgian: იაკობი (iaḳobi), ჯეიმზ (ǯeimz) (transliteration)
- Greek: Ιάκωβος (el) m (Iákovos), Ιακώβ (el) m (Iakóv), Τζέιμς (el) (Tzéims)
- Ancient Greek: Ἰάκωβος m (Iákōbos)
- Greenlandic: Jaaku (kl)
- Hausa: Yaƙubu
- Hawaiian: Kimo, Iakopo, Iakopa
- Hebrew: (transcription) ג׳ק m
- Hindi: जैक (jaik)
- Hungarian: Jakab (hu)
- Icelandic: Jakob (is), Jakop (is), Jaki (is), Jack (is)
- Ido: Iakobus (io) m
- Inuktitut: ᔮᑯᑉ (yaakop)
- Irish: Séamas (ga) m, Séamus m
- Italian: Giacomo (it), Giacobbe (it) m, Jacopo (it) m, Iago (it) m
- Japanese: ヤコブ (Yakobu), ジャック (ja) (Jakku), ジェームズ (Jēmuzu), ジェイムズ (Jeimuzu), サンティアゴ (ja) (Santiago)
- Korean: 야곱 (yagop), 야고보 (Yagobo), 제임스 (Jeimseu), 잭 (Jaek)
- Latin: Iacobus (la) m, Jacobus m, Jacomus (Late Latin)
- Latvian: Jēkabs m, (transliteration) Džeimss m
- Limburgish: Jakobus
- Lithuanian: Jokūbas
- Macedonian: Јаков m (Jakov)
- Malay: Yakub, Yaakub, Yaacob (British misspelling)
- Maltese: Ġakbu (mt)
- Manchu: ᠶᠠᡴᠣᠪ (yakob)
- Manx: Jamys (gv)
- Maori: Hākopa, Haki, Hēmi (mi)
- Marathi: जॅक m (jĕk)
- Navajo: Jéíkab
- Ngazidja Comorian: Yakub, Yakuba
- Norman: Jâcob m, Jimce m
- Northern Sami: Jáhkot
- Norwegian: Jakob (no), Jacob (no), Jack (no)
- Occitan: Jammes, James (oc), Jacme (oc) (Provençal), Jaume (oc)
- Persian: یعقوب (fa) (ya'qub), جیمز (fa) (jeymz)
- Polish: Jakub (pl)
- Portuguese: Jacó (pt) m, Iago (pt), Tiago (pt), Diogo (pt), Jaime (pt)
- Romanian: Iacob (ro)
- Russian: Я́ков (ru) (Jákov), Джеймс (ru) m (Džejms) (transliteration)
- Scots: Hamish, Jaucob, Jack, James, Jamie, Jeames, Peem
- Scottish Gaelic: Seumas (gd), Sheumais (gd)
- Serbo-Croatian:
- Cyrillic: Јаков
- Roman: Jakov m
- Sicilian: Jàbbucu m, Jàcumu m
- Slovak: Jakub
- Slovene: Jakob (sl) m
- Spanish: Jacobo (es), Jacob (es), Santiago (es), Santi (es), Diego (es), Jaime (es), Yago (es), Iago
- Swahili: Yakobo (sw), Yaakub
- Swedish: Jakob (sv), Jacob (sv), Jack (sv) c
- Tagalog: Jaime, Santiago (tl)
- Thai: ยาโคบ (yaa-kôhp)
- Turkish: Yakub, Yakup
- Ukrainian: Я́ків m (Jákiv)
- Vietnamese: Giacôbê, Giacôbe, Giacóp, Giacơ, Yacôbê
- Walloon: Djåke (wa)
- Waray-Waray: Santiago
- Welsh: Jac m, Iago (cy)
- West Frisian: Jakobus, Japik
- Yiddish: יעקבֿ m (yakev)
- Zealandic: Jakobus
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