The Norwegian resistance to the occupation of Norway by Nazi Germany began after Operation Weserübung in 1940 and ended in 1945. It took several forms:

• Asserting the legitimacy of the exiled government, and by implication the lack of legitimacy of Vidkun Quisling's pro-Nazi regime and Josef Terboven's military administration
• The initial defense in Southern Norway, which was largely disorganized, but succeeded in allowing the government to escape capture
• The more organized military defense and counter-attacks in parts of Western and Northern Norway, aimed at securing strategic positions and the evacuation of the government
• Armed resistance, in the form of sabotage, commando raids, assassinations and other special operations during the occupation
• Civil disobedience and unarmed resistance