Anti-Jewish sentiment is "considerably" rooted in German society, according to a report by professionals appointed by the Bundestag (parliament).
They say the internet has played a crucial role in scattering Holocaust rejection, far-right and intense Islamist views, according to the DPA news agency.
They also articulate of "a broader acceptance in conventional society of day-to-day anti-Jewish outbursts and actions".
The professional group, set up in 2009, is to report repeatedly on anti-Semitism.
The conclusion of their report, due to be presented on Monday, were that anti-Jewish feeling was "on the basis of prevalent prejudice, deeply-ingrained cliches and also on plain unawareness of Jews and Judaism".
Additionally that far-right saying at football matches was a constant incidence.
The report's authors put Germany central in their estimation of other European states in elation to the multiply of anti-Semitism.
They see severely high levels of anti-Jewish feeling in parts of Poland, Hungary and Portugal.
Germany's Jewish population has undergone something of a restoration since the decline of the Berlin Wall.
Before 1989, the population was below 30,000 but an arrival of Jews, largely from the past Soviet Union, has increased the number to 200,000.
Speaking on Friday to mark the anniversary of the 1942 Wannsee conference, when the Nazis' killing of millions of Jews was mapped out, President Christian Wulff vowed that Germany would keep the recall of the Holocaust alive and would never discard the Jewish population.
