The Jews (Hebrew: יְהוּדִים ISO 259-3 Yehudim Israeli pronunciation [jehuˈdim]), also known as the Jewish people, are a nation and an ethnoreligious group, originating in the Israelites or Hebrews of the Ancient Near East. The Jewish ethnicity, nationality, and religion are strongly interrelated, as Judaism is the traditional faith of the Jewish nation. Converts to Judaism, whose status as Jews within the Jewish ethnos is equal to those born into it, have been absorbed into the Jewish people throughout the millennia. (From Wikipedia)
Germany, Bavaria, Neumarkt Miscellaneous City Records, 1453-1973
Includes 74,517 cemetery records, court records, funeral home records, guild registers, Jewish records, land records, probate records, school records, tax records, and voting registers. On FamilySearch.org
Germany, Bremen Passenger Departure Lists, 1904-1914
Index cards, arranged alphabetically by place of last residence and then by surname, of German emigrants. Includes marital status, occupation, ship name, place of last residence, and destination. On FamilySearch.org
Germany, Prussia, Brandenburg, Cottbus, Miscellaneous City Records, 1672-1919
Miscellaneous records for the city of Cottbus, Brandenburg, Germany including military records, land and property records, citizen rolls, Jewish records, and city directories. Includes items from Sandow. On FamilySearch.org
Jewish Genealogical Society of Great Britain
"To help one another to learn and discover more about genealogy; encourage genealogical research; promote the preservation of Jewish genealogical records and resources; and share information amongst members."
The Latvia SIG is a group that focuses on Jewish genealogical research in Latvia. It also has a section on Estonia.
LitvakSIG is the primary internet resource for Lithuanian-Jewish ("Litvak") genealogy research worldwide.