Jaak maana ya jina bora: Kazi, Makini, Ukarimu, Tete, Bahati. Pata Jaak maana ya jina.
Jaak asili ya jina la kwanza. Aina ya Kiestonia Jacob Au James, na fomu fupi ya Flemish Jacob. Pata Jaak asili ya jina la kwanza.
Majina ya jina la Jaak katika nchi tofauti na lugha tofauti: Akiba, Akiva, Cobus, Coby, Coos, Giacobbe, Giacomo, Hagop, Hakob, Hemi, Iacobus, Iacomus, Iacopo, Iago, Iakob, Iakobos, Iakopa, Ib, Jákob, Jaakko, Jaakob, Jaakoppi, Jaap, Jacky, Jacob, Jacobo, Jacobus, Jacó, Jacopo, Jacques, Jago, Jaime, Jaka, Jakab, Jake, Jakes, Jakob, Jakov, Jakša, Jakub, Jákup, James, Jamey, Japik, Jaša, Jaska, Jaume, Jaumet, Jay, Jaycob, Jaymes, Jeb, Jem, Jemmy, Jeppe, Jim, Jockel, Jokūbas, Kapel, Kimo, Koba, Kobe, Kobus, Koby, Koos, Koppel, Kuba, Lapo, Séamas, Séamus, Seumas, Shamus, Sheamus, Sjaak, Sjakie, Yaakov, Yago, Yakiv, Yakov, Yakub, Yakup, Yankel, Yaqoob, Yaqub, Yasha. Pata Jaak kwa lugha zingine.
Majina ya kawaida yenye jina la mwisho Primos: Marcelo, Alphonse, Noelle, Ward, Rob, Noëlle. Pata Majina yanayotembea na Primos.