Häpna! ("Be amazed!") was a Swedish science fiction magazine published between 1954 and 1969 by Grafiska Förlaget Kindberg & Söner AB in Jönköping. It was published each month up to January 1965, then irregularly until January 1966; the final year, 1969, an attempt was made to revive the magazine which led to the final four issues. The editor was Kjell Ekström, except for the final year when Sam J. Lundwall took over.
The content was some domestic material, but mostly anonymous translations of Ray Bradbury, Robert A. Heinlein and Isaac Asimov.