
John-Henri Bertilson Holmberg (born 22 June 1949 inStockholm) is aSwedish author, critic, publisher and translator, and a well-knownscience fictionfan.[1][2] In the early 1960s he editedScience fiction Forum withBertil Mårtensson and Mats Linder and published over 200science fiction fanzines of his own, in addition to his professional career as editor and critic. One of the fans with whom he worked was fellow SwedeStieg Larsson.
As editor and later publisher atAskild & Kärnekull,Lindfors,Bokförlaget Bra Böcker/Wiken and later with his own publishing houseReplik he has introduced many current authors into Sweden, including several science fiction authors. A leadinglibertarian, he introducedAyn Rand into Swedish debate in the 1970s and later saw to the publication inSwedish of her main literary works.
He is a contributor toThe Encyclopedia of Science Fiction and toThe Encyclopedia of Fantasy, edited byJohn Clute andPeter Nicholls; and has written three major literary overviews in Swedish, a two-volume work aboutscience fiction and one-volume works on psychological suspense fiction and onfantasy. As a translator, he has renderedLemony Snicket's and many ofStephen King's novels into Swedish. He is a member of the Swedish Crime Fiction Academy and between 2004 and 2009 edited and published the quarterly, resurrectedNova science fiction (which in its earlier incarnation he also edited from 1982 to 1987), the largestScandinavianscience fiction magazine.
Holmberg is a frequent guest on Swedish television and radio for discussions about science fiction and other literature; in 2010, this has often included discussions of his relationship with fellow SF fan Stieg Larsson and the question of whether Larsson left behind fourth or even fifth novels in his series.[3] In 2011, he published a book in collaboration with Dan Bursteing and Arne De Keijzer, titledThe Tattooed Girl: The Enigma of Stieg Larsson and the Secrets Behind the Most Compelling Thrillers of Our Time. Rights to the book were presold in a number of languages.[4] In 2012, the book was nominated for theEdgar Award in the Best Critical/Biographical category.
He lives inViken, Sweden in the south of Sweden.
In August 2015 it was announced that he would be one of theGuests of Honor of the75th World Science Fiction Convention, to be held inHelsinki,Finland.[5]