In Jewish law and history, Acharonim (, , ; ; ) are 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 Shulchan Aruch (; a code of Jewish law) in 1563 CE.

The Acharonim follow the Rishonim, the "first ones"--the rabbinic scholars between the 11th and