New: Entries about birth, marriage and death in the registry offices of East and West Prussia from the State Archive Olsztyn in Poland can now be found easily. The Allensteiner Indexing Project of the Association for Family Research in East and West Prussia VFFOW has created a German-language search site where you can easily find the digitalized entries you are looking for.
Offices of the Registrar of Birth, Death and Marriages - Standesamt Berlin
You can find online on Ancestry the following scans: Ancestry Koenigsberg Data; Birth certificates (1874-1899), marriage certificates (1874-1929) and death certificates (1871-1944). Unfortunately there are small gaps in the registries. If you look under Ancestry, choose the following record group: Eastern Prussian Provinces, Germany [Poland], Selected Civil Vitals, 1874-1945, Königsberg (Pr.), 1941.
If you look for birth certificates after 1899 and marriage certificates after 1929, you can ask to make an appointment to visit the Landesarchiv Berlin, email: email@example.com
Address Books of Koenigsberg - Adressbuecher
Memorial Book - Gedenkbuch
Online Archive of the Arolsen Archives
The Arolsen Archives are an international center on Nazi persecution with the world’s most comprehensive archive on the victims and survivors of Nazi persecution (incl. Jewish DPs after the war).