Tyrann was a science fiction fanzine by Nobert Hirscchorn, published in New York, New York, U.S.A.
At least four issues of this hektographed fanzine appeared in the 1950s. The Assistant Editor was Richard Bergeron, who later went on to publish his own fanzine, Warhoon.
Art work is by Richard Bergeron.
Written contributions come from Toby Duane, Richard Elsberry, Bob Farnham (The Chigger Patch of Fandom), W. Paul Ganley and Ev Winne,
Included in the fanzine are an editorial by Hirschorn, articles, fiction, poetry, fanzine reviews, and a letters column.