Katz is a German and Jewish surname meaning "cat," though for Jewish families it often originated as an acronym for *kohen tzedek* (righteous priest).
The name appears in various compounds and business names: Katz's Delicatessen is a New York institution.
Like many surnames, it occasionally appears as a given name.
1. surname — Cohen, Priestly lineage surname; Levi (Hebrew name, "attached"); Schwartz (Surname meaning black); Rosenberg (German surname, flower-hill); Goldberg · Feldman · Horowitz · Silverman · Friedman · Greenberg · Stern · Roth · Kaplan · ancestry
2. Jewish — synagogue, Jewish house of worship; Torah (Judaism's core scripture); rabbi (Jewish spiritual leader); kosher (Permissible by Jewish law); Shabbat · Hebrew · kohen · Levite · Ashkenazi · Yiddish · Israel · Passover · Hanukkah · seder