John-Henri Bertilson Holmberg (born 22 June 1949 in Stockholm) is a Swedish author, critic, publisher and translator, and a well-known science fiction fan.John-Henri Holmberg , Svenska Deckarakademien, accessed 2010-05-14 Svensk science fiction - en översikt, Tidningen Kulturen 2008-09-30 In the early 1960s he edited Science fiction Forum with Bertil Mårtensson and Mats Linder and published over 200 science 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 Swede Stieg Larsson.
