Germanische Altertumskunde Online, formerly called Reallexikon der Germanischen Altertumskunde, is a German encyclopedia of the study of Germanic history and cultures, as well as the cultures that were in close contact with them.
The second edition, under the auspices of the Göttingen Academy of Sciences and Humanities, was edited by Heinrich Beck (from vol 1, 1968/72), Heiko Steuer (from vol.
8, 1991/94), Rosemarie Müller (from 1992), and Dieter Geuenich (from vol.
[1] In 2010, the most recent version was published, now renamed Germanische Altertumskunde Online.
Edited by Heinrich Beck, Heiko Steuer, Dieter Geuenich, Wilhelm Heizmann, Sebastian Brather, Steffen Patzold and Sigmund Oehrl, it is published online by De Gruyter, accessible via subscription.