Cognomen Birnhack (Birnhack 
) , globally, is a very rare family name. The family name Birnhack is characteristic of Israel, where it is a very rare surname, the United States, and Germany, where it is an extremely rare surname. Much less frequently, Birnhack is the forename as well as the last name.
Mel, Isaac, Yakov, Miriam, Samuel, Shifra, Perele, Rachel, Nathan, Esther, Frieda, Frumet, Yehuda, Michael, Abraham, Pinchos, Ephraim, Yisroel, Jacob, David, Pearl, Bashy, Eli, Sara, Amir, Asaf, Kobi, Rose, Leah, Liat, Yoichanan, Esty, Oran, Mendy, Sarah, Aryeh, Chaim, Chava, Chaya, Cirla, Itty, and Yitzchok