Isak Meaning in English. What is the meaning of Isak? by names Isak: Scandinavian form of Isaac, meaning “he will laugh” or “laughter.” Famous People: Isak Dinesen – Danish author. Isak Bergmann Jóhannesson – Icelandic actor. Isak Skierka – Polish journalist. 🔍 SEARCH 🔍+ ADD CLAN NAMES▶ UTube Channel