The Hartvig Nissen School, informally referred to as Nissen, is a former girls' gymnasium in Oslo, Norway, now co-educational. It is located in the neighborhood Uranienborg in the affluent West End borough of Frogner. It is Norway's oldest high school for girls and is widely considered one of the country's two most prestigious high schools alongside the traditionally male-only Oslo Cathedral School; its alumni include many famous individuals and two members of the Norwegian royal family.
- Country
- Norway
- Headquarters
- Oslo
- Inception
- 1849
- Website
- https://hartvig-nissen.vgs.no
