Academic requirements
A compilation of country-specific information called the GSU-list (formerly SIS list) states what level of education applicants from different countries need to meet for entry into Norwegian higher education, including any requirements concerning proficiency in English. For courses where the language of instruction is Norwegian, proficiency in the Norwegian language is also required.
An updated pdf-version of the GSU list can be found here.
Undergraduate studies
Completion of secondary education at advanced level, equivalent to passing the exam at the end of Norwegian secondary school, is the general basic requirement for entry to Norwegian universities and university colleges. For students from some countries at least one year of completed studies at the university level is required in addition.