Avraham Shmuel Binyamin Sofer, (German: Abraham Samuel Benjamin Schreiber), also known by his main work Ksav Sofer or Ketav Sofer (trans. Writ of the Scribe), (1815–1871), was one of the leading rabbis of Hungarian Jewry in the second half of the nineteenth century and rosh yeshiva of the famed Pressburg Yeshiva. His official German name was Samuel Wolf Schreiber.