The Hugo Award for Best Semiprozine is given each year to a periodical publication related to science fiction or fantasy that meets several criteria having to do with the number of issues published and who, if anyone, receives payment. The award was first presented in 1984, and has been given annually since, though the qualifying criteria have changed. Awards were once also given out for professional magazines in the professional magazine category, and are still awarded for fan magazines in the fanzine category.

The Hugo Award for Best Fanzine is given each year for non professionally edited magazines, or "fanzines", related to science fiction or fantasy which has published four or more issues with at least one issue appearing in the previous calendar year. Awards were also once given out for professional magazines in the professional magazine category, and since 1984 have been awarded for semi-professional magazines in the semiprozine category; several magazines that were nominated for or won the fanzine category have gone on to be nominated for or win the semiprozine category since it was established. The Hugo Awards have been described as "a fine showcase for speculative fiction" and "the best known literary award for science fiction writing".