Ostara or Ostara, Briefbücherei der Blonden und Mannesrechtler (English 'Ostara, newsletter of the blonde and masculists') was a German nationalist magazine founded in 1905 by the occultist Lanz von Liebenfels in Vienna, Austria.
Lanz derived the name of the publication from the reconstructed Old High German goddess name *Ôstarâ. Lanz claimed that the Ostrogoths and the nation of Austria (German: Österreich) were matronymically named after this goddess. In his study of Lanz von Liebenfels, the Austrian psychologist Wilfried Daim states that this claim by von Liebenfels is "most likely this is even greater nonsense."
According to von Liebenfels, the magazine had a peak circulation of 100,000. The magazine appeared in three series; the first series included 100 (or 89 ?) issues between 1905 and 1917, the second series had only one issue, and the third series included 20 issues between 1927 and 1930.