Isaacs

Isaacs is a surname of Jewish and English origin. It is a patronymic derived from the given name Isaac, meaning "he will laugh" in Hebrew, with the suffix indicating "son of." The form reflects Jewish naming conventions and was later adopted in English-speaking societies.

Variant spellings include Isaak, Issacs, and Isaacson. Isaacs is common in the United States, the United Kingdom, Canada, Australia, and South Africa, reflecting both Jewish diaspora and general Anglophone settlement. The surname often indicates ancestral linkage to Isaac.

Notable individuals with the surname include Sir Isaac Isaacs (1851–1948), an Australian jurist and statesman who served as Chief Justice of the High Court and later as Governor-General of Australia.

See also Isaac (given name) and Isaacson for related names.