The validity of a Norway Tourist Visa depends on the decision of the visa authorities. However, it generally allows a maximum stay of 90 days within a 180-day period. The visa may be issued as a single-entry, double-entry, or multiple-entry visa based on your travel history and purpose. Even if the visa is valid for several months, you must not stay longer than 90 days in total within the allowed 180-day period. Overstaying may lead to penalties.