Høgnorsk (Norwegian pronunciation: [ˈhø̂ːɡnɔʁsk, ˈhø̂ːɡnɔʂk]; meaning High Norwegian) is a term for varieties of the Norwegian language from Nynorsk that reject most of the official reforms that have been introduced since the creation of Landsmål. Høgnorsk typically accepts the initial reforms that, among other things, removed certain silent letters of etymological origin, while keeping most of the Landsmål grammar intact.
Torleiv Hannaas is often credited for introducing the term Høgnorsk in an article in 1922. He used it analogously to High German (Hochdeutsch), pointing out that Ivar Aasen, the creator of Nynorsk orthography, had especially valued the dialects of the mountainous areas of middle and western Norway, as opposed to the dialects of the lowlands of eastern Norway, which Hannaas called flatnorsk (Flat Norwegian, like Plattdeutsch).