Acharonim (; ; sing. אחרון, Aḥaron; lit. "last ones") is a term used in Jewish law and history, to signify the leading rabbis and poskim (Jewish legal decisors) living from roughly the 16th century to the present, and more specifically since the writing of the Shulkhan Arukh (Hebrew: שׁוּלחָן עָרוּך, "Set Table", a code of Jewish law) in 1563 CE.